| 1991 | ATL | Atlanta Braves | MLB-NL | MLB | team page | 162 | 94 | 68 | -- | 749 | 644 | 105 | 1 | 2 | Bobby Cox | Atlanta-Fulton County Stadium | Lost World Series (Twins) |
| 1991 | ATL | Richmond Braves | IL | AAA | team page | 144 | 65 | 79 | 20.0 | 654 | 628 | 26 | 4 | 8 | Phil Niekro | The Diamond | dnq |
| 1991 | ATL | Greenville Braves | Sou | AA | team page | 144 | 88 | 56 | -- | 608 | 503 | 105 | 1 | 1 | Chris Chambliss | Greenville Municipal Stadium | Lost in Semi-Finals |
| 1991 | ATL | Durham Bulls | Caro | A+ | team page | 137 | 79 | 58 | 9.5 | 587 | 473 | 114 | 3 | 3 | Grady Little | Durham Athletic Park | dnq |
| 1991 | ATL | Macon Braves | SAL | A | team page | 141 | 83 | 58 | -- | 722 | 597 | 125 | 3 | 3 | Roy Majtyka | Luther Williams Field | Lost in Semi-Finals |
| 1991 | ATL | Gulf Coast Braves | GCL | Rk | team page | 59 | 30 | 29 | 1.5 | 271 | 313 | -42 | 2 | 9 | Jim Saul | West Palm Beach Municipal Stadium | dnq |
| 1991 | ATL | Idaho Falls Braves | Pio | Rk | team page | 69 | 39 | 30 | 9.5 | 483 | 487 | -4 | 2 | 4 | Steve Curry | McDermott Field | dnq |
| 1991 | ATL | Pulaski Braves | App | Rk | team page | 68 | 45 | 23 | -- | 352 | 266 | 86 | 1 | 1 | Randy Ingle | Calfee Park | League Champions |
| 1991 | BAL | Baltimore Orioles | MLB-AL | MLB | team page | 162 | 67 | 95 | 24.0 | 686 | 796 | -110 | 6 | 13 | Johnny Oates, Frank Robinson | Memorial Stadium | dnq |
| 1991 | BAL | Rochester Red Wings | IL | AAA | team page | 144 | 76 | 68 | 3.5 | 711 | 658 | 53 | 2 | 4 | Greg Biagini | Silver Stadium | dnq |
| 1991 | BAL | Hagerstown Suns | East | AA | team page | 140 | 81 | 59 | 6.0 | 704 | 554 | 150 | 2 | 2 | Jerry Narron | Municipal Stadium | Lost in Semi-Finals (Albany) |
| 1991 | BAL | Frederick Keys | Caro | A+ | team page | 140 | 58 | 82 | 13.5 | 603 | 639 | -36 | 4 | 7 | Wally Moon | Harry Grove Stadium | dnq |
| 1991 | BAL | Kane County Cougars | Midw | A | team page | 135 | 68 | 67 | 7.5 | 618 | 565 | 53 | 5 | 7 | Bob Miscik | Elfstrom Stadium | Lost in Semi-Finals |
| 1991 | BAL | Bluefield Orioles | App | Rk | team page | 67 | 36 | 31 | 8.5 | 329 | 272 | 57 | 5 | 6 | Gus Gil | Bowen Field at Peters Park | dnq |
| 1991 | BAL | Gulf Coast Orioles | GCL | Rk | team page | 59 | 35 | 24 | -- | 283 | 230 | 53 | 1 | 1 | Ed Napoleon | Ed Smith Stadium | Lost in Finals |
| 1991 | BOS | Boston Red Sox | MLB-AL | MLB | team page | 162 | 84 | 78 | 7.0 | 731 | 712 | 19 | 3 | 7 | Joe Morgan | Fenway Park | dnq |
| 1991 | BOS | Pawtucket Red Sox | IL | AAA | team page | 143 | 79 | 64 | -- | 699 | 677 | 22 | 1 | 2 | Butch Hobson | McCoy Stadium | Lost in Finals |
| 1991 | BOS | New Britain Red Sox | East | AA | team page | 140 | 47 | 93 | 40.0 | 431 | 667 | -236 | 8 | 8 | Gary Allenson | Beehive Field | dnq |
| 1991 | BOS | Lynchburg Red Sox | Caro | A+ | team page | 139 | 67 | 72 | 4.0 | 560 | 575 | -15 | 2 | 5 | Buddy Bailey | Lynchburg City Stadium | Lost in Finals |
| 1991 | BOS | Winter Haven Red Sox | FSL | A+ | team page | 128 | 43 | 85 | 29.0 | 401 | 606 | -205 | 4 | 14 | Mike Verdi | Chain of Lakes Park | dnq |
| 1991 | BOS | Elmira Pioneers | NYPL | A- | team page | 77 | 47 | 30 | -- | 359 | 314 | 45 | 1 | 3 | Dave Holt | Dunn Field | dnq |
| 1991 | BOS | Gulf Coast Red Sox | GCL | Rk | team page | 60 | 33 | 27 | -- | 299 | 245 | 54 | 1 | 2 | Felix Maldonado | Chain of Lakes Park | Lost in Semi-Finals |
| 1991 | CAL | California Angels | MLB-AL | MLB | team page | 162 | 81 | 81 | 14.0 | 653 | 649 | 4 | 7 | 11 | Doug Rader, Buck Rodgers | Anaheim Stadium | dnq |
| 1991 | CAL | Edmonton Trappers | PCL | AAA | team page | 136 | 70 | 66 | 2.0 | 735 | 725 | 10 | 2 | 5 | Max Oliveras | John Ducey Park | dnq |
| 1991 | CAL | Midland Angels | Tex | AA | team page | 135 | 67 | 68 | 13.5 | 809 | 797 | 12 | 3 | 5 | Don Long | Angels Stadium | Lost in Semi-Finals |
| 1991 | CAL | Palm Springs Angels | Calif | A+ | team page | 136 | 65 | 71 | -- | 586 | 647 | -61 | 3 | 6 | Nate Oliver | Palm Springs Stadium | dnq |
| 1991 | CAL | Quad Cities Angels | Midw | A | team page | 137 | 74 | 63 | 6.0 | 635 | 601 | 34 | 3 | 5 | Mitch Seoane | John O'Donnell Stadium | dnq |
| 1991 | CAL | Boise Hawks | Nwst | A- | team page | 76 | 50 | 26 | -- | 436 | 315 | 121 | 1 | 1 | Tom Kotchman | Memorial Stadium | dnq |
| 1991 | CAL | Arizona Angels | Ariz | Rk | team page | 59 | 29 | 30 | 9.5 | 357 | 353 | 4 | 5 | 6 | Bill Lachemann | Gene Autry Park | dnq |
| 1991 | CHN | Chicago Cubs | MLB-NL | MLB | team page | 160 | 77 | 83 | 20.0 | 695 | 734 | -39 | 4 | 7 | Jim Essian, Don Zimmer, Joe Altobelli | Wrigley Field | dnq |
| 1991 | CHN | Iowa Cubs | Amer | AAA | team page | 144 | 78 | 66 | 1.0 | 674 | 652 | 22 | 2 | 3 | Jim Essian, Mick Kelleher | Sec Taylor Stadium | dnq |
| 1991 | CHN | Charlotte Knights | Sou | AA | team page | 144 | 74 | 70 | 14.0 | 582 | 586 | -4 | 3 | 5 | Jay Loviglio | Knights Stadium | dnq |
| 1991 | CHN | Winston-Salem Spirits | Caro | A+ | team page | 140 | 83 | 57 | 7.0 | 666 | 561 | 105 | 2 | 2 | Brad Mills | Ernie Shore Field | dnq |
| 1991 | CHN | Peoria Chiefs | Midw | A | team page | 138 | 62 | 76 | 18.5 | 577 | 678 | -101 | 6 | 12 | Bill Hayes | Meinen Field | dnq |
| 1991 | CHN | Geneva Cubs | NYPL | A- | team page | 78 | 35 | 43 | 12.5 | 336 | 355 | -19 | 4 | 12 | Greg Mahlberg | McDonough Park | dnq |
| 1991 | CHN | Huntington Cubs | App | Rk | team page | 67 | 25 | 42 | 19.5 | 248 | 366 | -118 | 8 | 9 | Steve Roadcap | St. Cloud Commons | dnq |
| 1991 | CHA | Chicago White Sox | MLB-AL | MLB | team page | 162 | 87 | 75 | 8.0 | 758 | 681 | 77 | 2 | 3 | Jeff Torborg | Comiskey Park II | dnq |
| 1991 | CHA | Vancouver Canadians | PCL | AAA | team page | 135 | 49 | 86 | 22.5 | 576 | 728 | -152 | 5 | 10 | Rick Renick | Nat Bailey Stadium | dnq |
| 1991 | CHA | Birmingham Barons | Sou | AA | team page | 143 | 77 | 66 | -- | 583 | 534 | 49 | 1 | 2 | Rico Petrocelli | Hoover Metropolitan Stadium | Lost in Finals |
| 1991 | CHA | Sarasota White Sox | FSL | A+ | team page | 131 | 75 | 56 | 6.5 | 480 | 476 | 4 | 2 | 3 | Richard Patterson | Ed Smith Stadium | Lost in 1st Round |
| 1991 | CHA | South Bend White Sox | Midw | A | team page | 139 | 69 | 70 | 8.5 | 546 | 583 | -37 | 4 | 8 | Tommy Thompson | Stanley Covelski Regional Stadium | dnq |
| 1991 | CHA | Utica Blue Sox | NYPL | A- | team page | 76 | 39 | 37 | 11.5 | 358 | 341 | 17 | 3 | 5 | Mike Gellinger | Donovan Stadium at Murnane Field | dnq |
| 1991 | CHA | Gulf Coast White Sox | GCL | Rk | team page | 59 | 30 | 29 | 1.5 | 251 | 234 | 17 | 4 | 6 | Jaime Garcia | Ed Smith Stadium | dnq |
| 1991 | CIN | Cincinnati Reds | MLB-NL | MLB | team page | 162 | 74 | 88 | 20.0 | 689 | 691 | -2 | 5 | 10 | Lou Piniella | Riverfront Stadium | dnq |
| 1991 | CIN | Nashville Sounds | Amer | AAA | team page | 143 | 65 | 78 | 16.0 | 525 | 615 | -90 | 3 | 6 | Pete Mackanin | Herschel Greer Stadium | dnq |
| 1991 | CIN | Chattanooga Lookouts | Sou | AA | team page | 144 | 73 | 71 | 4.5 | 612 | 595 | 17 | 2 | 6 | Jim Tracy | Engel Stadium | dnq |
| 1991 | CIN | Cedar Rapids Reds | Midw | A | team page | 140 | 66 | 74 | 15.5 | 584 | 593 | -9 | 5 | 10 | Frank Funk | Veterans Field | dnq |
| 1991 | CIN | Charleston (Wv) Wheelers | SAL | A | team page | 142 | 92 | 50 | -- | 601 | 471 | 130 | 1 | 1 | P.J. Carey, Dave Miley | Walt Powell Park | Lost in Finals |
| 1991 | CIN | Billings Mustangs | Pio | Rk | team page | 69 | 25 | 44 | 20.5 | 307 | 400 | -93 | 3 | 6 | P.J. Carey | Cobb Field | dnq |
| 1991 | CIN | Princeton Reds | App | Rk | team page | 64 | 24 | 40 | 19.0 | 238 | 321 | -83 | 9 | 8 | Sam Mejias | H.P. Hunnicut Field | dnq |
| 1991 | CLE | Cleveland Indians | MLB-AL | MLB | team page | 162 | 57 | 105 | 34.0 | 576 | 759 | -183 | 7 | 14 | Mike Hargrove, John McNamara | Cleveland Stadium | dnq |
| 1991 | CLE | Colorado Springs Sky Sox | PCL | AAA | team page | 139 | 72 | 67 | 8.5 | 810 | 684 | 126 | 3 | 4 | Charlie Manuel, Minnie Mendoza | Sky Sox Stadium | Lost in Semi-Finals |
| 1991 | CLE | Canton/Akron Indians | East | AA | team page | 140 | 75 | 65 | 12.0 | 556 | 528 | 28 | 4 | 4 | Ken Bolek | Thurman Munson Memorial Stadium | Lost in Semi-Finals (Harrisburg) |
| 1991 | CLE | Kinston Indians | Caro | A+ | team page | 138 | 89 | 49 | -- | 629 | 544 | 85 | 1 | 1 | Brian Graham | Grainger Stadium | League Champions |
| 1991 | CLE | Columbus Indians | SAL | A | team page | 142 | 73 | 69 | -- | 727 | 710 | 17 | 4 | 5 | Michael Brown | Golden Park | dnq |
| 1991 | CLE | Watertown Indians | NYPL | A- | team page | 77 | 27 | 50 | 24.0 | 297 | 368 | -71 | 4 | 14 | Jim Gabella, Gary Tuck | Duffy Fairgrounds | dnq |
| 1991 | CLE | Burlington Indians | App | Rk | team page | 67 | 40 | 27 | 4.5 | 332 | 279 | 53 | 2 | 3 | Dave Keller | Burlington Athletic Stadium | Lost in Finals |
| 1991 | DET | Detroit Tigers | MLB-AL | MLB | team page | 162 | 84 | 78 | 7.0 | 817 | 794 | 23 | 2 | 6 | Sparky Anderson | Tiger Stadium | dnq |
| 1991 | DET | Toledo Mud Hens | IL | AAA | team page | 144 | 74 | 70 | 11.0 | 637 | 653 | -16 | 3 | 5 | Joe Sparks | Ned Skeldon Stadium | dnq |
| 1991 | DET | London Tigers | East | AA | team page | 139 | 61 | 78 | 25.5 | 550 | 664 | -114 | 6 | 6 | Gene Roof | Labatt Memorial Park | dnq |
| 1991 | DET | Lakeland Tigers | FSL | A+ | team page | 128 | 72 | 56 | -- | 541 | 502 | 39 | 1 | 4 | Johnny Lipon | Joker Marchant Stadium | Lost in Semi-Finals |
| 1991 | DET | Fayetteville Generals | SAL | A | team page | 137 | 58 | 79 | 31.5 | 530 | 654 | -124 | 6 | 13 | Gerry Groninger | J.P. Riddle Stadium | dnq |
| 1991 | DET | Niagara Falls Rapids | NYPL | A- | team page | 78 | 36 | 42 | 15.0 | 377 | 376 | 1 | 3 | 9 | Gary Calhoun | Sal Maglie Stadium | dnq |
| 1991 | DET | Bristol Tigers | App | Rk | team page | 66 | 22 | 44 | 22.0 | 225 | 370 | -145 | 10 | 10 | Juan Lopez | Devault Memorial Stadium | dnq |
| 1991 | HOU | Houston Astros | MLB-NL | MLB | team page | 162 | 65 | 97 | 29.0 | 605 | 717 | -112 | 6 | 12 | Art Howe | Astrodome | dnq |
| 1991 | HOU | Tucson Toros | PCL | AAA | team page | 140 | 79 | 61 | 2.0 | 748 | 716 | 32 | 2 | 2 | Bob Skinner | Hi Corbett Field | League Champions |
| 1991 | HOU | Jackson Generals | Tex | AA | team page | 136 | 70 | 66 | 16.0 | 621 | 661 | -40 | 2 | 4 | Rick Sweet | Smith-Wills Stadium | dnq |
| 1991 | HOU | Osceola Astros | FSL | A+ | team page | 127 | 64 | 63 | 7.5 | 484 | 455 | 29 | 2 | 7 | Sal Butera | Osceola County Stadium | dnq |
| 1991 | HOU | Asheville Tourists | SAL | A | team page | 138 | 55 | 83 | 35.0 | 547 | 670 | -123 | 7 | 14 | Frank Cacciatore | McCormick Field | dnq |
| 1991 | HOU | Burlington Astros | Midw | A | team page | 137 | 67 | 70 | 13.0 | 616 | 640 | -24 | 4 | 9 | Tim Tolman | Community Field | Lost in Semi-Finals |
| 1991 | HOU | Auburn Astros | NYPL | A- | team page | 77 | 38 | 39 | 9.0 | 365 | 382 | -17 | 2 | 6 | Steve Dillard | Falcon Park | dnq |
| 1991 | HOU | Gulf Coast Astros | GCL | Rk | team page | 60 | 27 | 33 | 6.0 | 227 | 303 | -76 | 4 | 13 | Julio Linares | Kissimmee | dnq |
| 1991 | KCA | Kansas City Royals | MLB-AL | MLB | team page | 162 | 82 | 80 | 13.0 | 727 | 722 | 5 | 6 | 10 | Hal McRae, John Wathan, Bob Schaefer | Royals Stadium | dnq |
| 1991 | KCA | Omaha Royals | Amer | AAA | team page | 144 | 73 | 71 | 6.0 | 631 | 598 | 33 | 3 | 5 | Sal Rende | Johnny Rosenblatt Stadium | dnq |
| 1991 | KCA | Memphis Chicks | Sou | AA | team page | 144 | 61 | 83 | 16.5 | 553 | 625 | -72 | 5 | 9 | Jeff Cox | Tim McCarver Stadium | dnq |
| 1991 | KCA | Baseball City Royals | FSL | A+ | team page | 131 | 62 | 69 | 11.5 | 446 | 461 | -15 | 3 | 9 | Carlos Tosca | Baseball City Stadium | dnq |
| 1991 | KCA | Appleton Foxes | Midw | A | team page | 139 | 58 | 81 | 19.5 | 539 | 682 | -143 | 7 | 14 | Joseph Breeden | Goodland Field | dnq |
| 1991 | KCA | Eugene Emeralds | Nwst | A- | team page | 76 | 42 | 34 | 8.0 | 394 | 370 | 24 | 2 | 3 | Tom Poquette | Civic Stadium | dnq |
| 1991 | KCA | Gulf Coast Royals | GCL | Rk | team page | 60 | 31 | 29 | 2.0 | 262 | 256 | 6 | 2 | 5 | Bob Herold | Baseball City Stadium | dnq |
| 1991 | LAN | Los Angeles Dodgers | MLB-NL | MLB | team page | 162 | 93 | 69 | 1.0 | 665 | 565 | 100 | 2 | 3 | Tommy Lasorda | Dodger Stadium | dnq |
| 1991 | LAN | Albuquerque Dukes | PCL | AAA | team page | 138 | 80 | 58 | -- | 730 | 668 | 62 | 1 | 1 | Kevin Kennedy | Albuquerque Sports Stadium | dnq |
| 1991 | LAN | San Antonio Missions | Tex | AA | team page | 136 | 61 | 75 | 20.0 | 643 | 677 | -34 | 4 | 6 | John Shoemaker | V.J. Keefe Memorial Stadium | dnq |
| 1991 | LAN | Bakersfield Dodgers | Calif | A+ | team page | 136 | 85 | 51 | -- | 738 | 528 | 210 | 0 | 2 | Tom Beyers | Sam Lynn Ballpark | Lost in 1st Round |
| 1991 | LAN | Vero Beach Dodgers | FSL | A+ | team page | 131 | 79 | 52 | -- | 546 | 514 | 32 | 1 | 2 | Jerry Royster | Holman Stadium | Lost in 1st Round |
| 1991 | LAN | Yakima Bears | Nwst | A- | team page | 76 | 44 | 32 | -- | 473 | 356 | 117 | 1 | 2 | Joe Vavra | Parker Field | Lost in Finals |
| 1991 | LAN | Great Falls Dodgers | Pio | Rk | team page | 70 | 46 | 24 | -- | 421 | 347 | 74 | 1 | 2 | Glenn Hoffman | Legion Field | Lost in Finals |
| 1991 | LAN | Gulf Coast Dodgers | GCL | Rk | team page | 60 | 29 | 31 | 4.0 | 272 | 256 | 16 | 3 | 10 | Ivan De Jesus | Holman Stadium | dnq |
| 1991 | MIL | Milwaukee Brewers | MLB-AL | MLB | team page | 162 | 83 | 79 | 8.0 | 799 | 744 | 55 | 4 | 9 | Tom Trebelhorn | County Stadium | dnq |
| 1991 | MIL | Denver Zephyrs | Amer | AAA | team page | 144 | 79 | 65 | -- | 735 | 658 | 77 | 1 | 2 | Tony Muser | Mile High Stadium | League Champions |
| 1991 | MIL | El Paso Diablos | Tex | AA | team page | 136 | 81 | 55 | -- | 909 | 715 | 194 | 1 | 2 | Dave Huppert | Cohen Stadium | Lost in Finals |
| 1991 | MIL | Stockton Ports | Calif | A+ | team page | 136 | 71 | 65 | 21.0 | 639 | 595 | 44 | 2 | 4 | Chris Bando | Billy Hebert Field | Lost in Finals |
| 1991 | MIL | Beloit Brewers | Midw | A | team page | 137 | 70 | 67 | 6.5 | 637 | 581 | 56 | 3 | 6 | Rob Derksen | Harry C. Pohlman Field | dnq |
| 1991 | MIL | Arizona Brewers | Ariz | Rk | team page | 60 | 34 | 26 | 5.0 | 442 | 376 | 66 | 2 | 2 | Wayne Krenchicki | Maryvale Baseball Park | dnq |
| 1991 | MIL | Helena Brewers | Pio | Rk | team page | 70 | 44 | 26 | 2.0 | 458 | 331 | 127 | 2 | 3 | Harry Dunlop | Kindrick Field | dnq |
| 1991 | MIN | Minnesota Twins | MLB-AL | MLB | team page | 162 | 95 | 67 | -- | 776 | 652 | 124 | 1 | 1 | Tom Kelly | Hubert H. Humphrey Metrodome | Won World Series (Braves) |
| 1991 | MIN | Portland Beavers | PCL | AAA | team page | 138 | 70 | 68 | 3.0 | 630 | 597 | 33 | 3 | 6 | Russ Nixon | Civic Stadium | Lost in Semi-Finals |
| 1991 | MIN | Orlando Sun Rays | Sou | AA | team page | 144 | 77 | 67 | 11.0 | 529 | 506 | 23 | 2 | 3 | Scott Ullger | Tinker Field | League Champions |
| 1991 | MIN | Visalia Oaks | Calif | A+ | team page | 136 | 58 | 78 | -- | 684 | 739 | -55 | 4 | 8 | Steven Liddle | Recreation Park | dnq |
| 1991 | MIN | Kenosha Twins | Midw | A | team page | 137 | 63 | 74 | 13.5 | 562 | 584 | -22 | 6 | 11 | Joel Lepel | Simmons Field | dnq |
| 1991 | MIN | Elizabethton Twins | App | Rk | team page | 68 | 39 | 29 | 6.0 | 316 | 270 | 46 | 4 | 4 | Ray Smith | Joe O'Brien Field | dnq |
| 1991 | MIN | Gulf Coast Twins | GCL | Rk | team page | 60 | 27 | 33 | 8.5 | 260 | 258 | 2 | 4 | 12 | Dan Rohn | Hammond Stadium | dnq |
| 1991 | MON | Montreal Expos | MLB-NL | MLB | team page | 161 | 71 | 90 | 26.5 | 579 | 655 | -76 | 6 | 11 | Tom Runnells, Buck Rodgers | Olympic Stadium | dnq |
| 1991 | MON | Indianapolis Indians | Amer | AAA | team page | 143 | 75 | 68 | 6.0 | 631 | 616 | 15 | 2 | 4 | Pat Kelly, Jerry Manuel | Bush Stadium | dnq |
| 1991 | MON | Harrisburg Senators | East | AA | team page | 140 | 87 | 53 | -- | 682 | 483 | 199 | 1 | 1 | Mike Quade | Riverside Stadium | Lost in Finals (Albany) |
| 1991 | MON | West Palm Beach Expos | FSL | A+ | team page | 131 | 72 | 59 | 7.0 | 448 | 393 | 55 | 3 | 5 | Felipe Alou | West Palm Beach Municipal Stadium | League Champions |
| 1991 | MON | Rockford Expos | Midw | A | team page | 137 | 76 | 61 | 0.5 | 648 | 592 | 56 | 2 | 3 | Rich Dubee, Pat Kelly, Rob Leary | Marinelli Field | dnq |
| 1991 | MON | Sumter Flyers | SAL | A | team page | 139 | 64 | 75 | 26.5 | 599 | 607 | -8 | 5 | 10 | Lorenzo Bundy | Riley Park | dnq |
| 1991 | MON | Jamestown Expos | NYPL | A- | team page | 78 | 51 | 27 | -- | 444 | 390 | 54 | 1 | 2 | Pat Creech | College Stadium | League Champions |
| 1991 | MON | Gulf Coast Expos | GCL | Rk | team page | 60 | 32 | 28 | -- | 276 | 280 | -4 | 1 | 3 | Keith Snider | McKechnie Field | League Champions |
| 1991 | NYN | New York Mets | MLB-NL | MLB | team page | 161 | 77 | 84 | 20.5 | 640 | 646 | -6 | 5 | 8 | Bud Harrelson, Mike Cubbage | Shea Stadium | dnq |
| 1991 | NYN | Tidewater Tides | IL | AAA | team page | 142 | 77 | 65 | 7.0 | 613 | 600 | 13 | 2 | 3 | Steve Swisher | Met Park | dnq |
| 1991 | NYN | Williamsport Bills | East | AA | team page | 139 | 60 | 79 | 26.5 | 561 | 679 | -118 | 7 | 7 | Clint Hurdle | Bowman Field | dnq |
| 1991 | NYN | St. Lucie Mets | FSL | A+ | team page | 131 | 72 | 59 | 7.0 | 433 | 404 | 29 | 2 | 6 | John Tamargo | Thomas J. White Stadium | Lost in Semi-Finals |
| 1991 | NYN | Columbia Mets | SAL | A | team page | 140 | 86 | 54 | -- | 669 | 551 | 118 | 2 | 2 | Tim Blackwell | Capital City Stadium | League Champions |
| 1991 | NYN | Pittsfield Mets | NYPL | A- | team page | 77 | 51 | 26 | -- | 465 | 342 | 123 | 1 | 1 | Jim Thrift | Wahconah Park | Lost in Finals |
| 1991 | NYN | Gulf Coast Mets | GCL | Rk | team page | 59 | 24 | 35 | 11.0 | 222 | 277 | -55 | 5 | 14 | Junior Roman | Thomas J. White Stadium | dnq |
| 1991 | NYN | Kingsport Mets | App | Rk | team page | 67 | 36 | 31 | 8.5 | 307 | 258 | 49 | 6 | 5 | Andre David | Dobyns-Bennett | dnq |
| 1991 | NYA | New York Yankees | MLB-AL | MLB | team page | 162 | 71 | 91 | 20.0 | 674 | 777 | -103 | 5 | 12 | Stump Merrill | Yankee Stadium I | dnq |
| 1991 | NYA | Columbus Clippers | IL | AAA | team page | 144 | 85 | 59 | -- | 749 | 624 | 125 | 1 | 1 | Rick Down | Cooper Stadium | League Champions |
| 1991 | NYA | Albany/Colonie Yankees | East | AA | team page | 140 | 76 | 64 | 11.0 | 703 | 615 | 88 | 3 | 3 | Dan Radison | Heritage Park | League Champions (Harrisburg) |
| 1991 | NYA | Fort Lauderdale Yankees | FSL | A+ | team page | 128 | 59 | 69 | 18.5 | 468 | 472 | -4 | 5 | 11 | Glenn Sherlock | Fort Lauderdale Stadium | dnq |
| 1991 | NYA | Prince William Cannons | Caro | A+ | team page | 139 | 71 | 68 | -- | 556 | 514 | 42 | 1 | 4 | Mike Hart | G. Richard Pfitzner Stadium | Lost in Semi-Finals |
| 1991 | NYA | Greensboro Hornets | SAL | A | team page | 141 | 73 | 68 | 18.5 | 625 | 546 | 79 | 2 | 4 | Trey Hillman | World War Memorial Stadium | dnq |
| 1991 | NYA | Oneonta Yankees | NYPL | A- | team page | 77 | 42 | 35 | 9.0 | 426 | 428 | -2 | 2 | 4 | Jack Gillis | Damaschke Field | dnq |
| 1991 | NYA | Gulf Coast Yankees | GCL | Rk | team page | 59 | 27 | 32 | 4.5 | 286 | 281 | 5 | 5 | 11 | Ken Dominguez | Yankee Complex | dnq |
| 1991 | OAK | Oakland Athletics | MLB-AL | MLB | team page | 162 | 84 | 78 | 11.0 | 760 | 776 | -16 | 4 | 5 | Tony La Russa | Oakland-Alameda County Coliseum | dnq |
| 1991 | OAK | Tacoma Tigers | PCL | AAA | team page | 136 | 63 | 73 | 9.0 | 641 | 718 | -77 | 4 | 9 | Jeff Newman | Cheney Stadium | dnq |
| 1991 | OAK | Huntsville Stars | Sou | AA | team page | 144 | 61 | 83 | 16.5 | 576 | 671 | -95 | 4 | 10 | Casey Parsons | Joe W. Davis Stadium | dnq |
| 1991 | OAK | Modesto A's | Calif | A+ | team page | 136 | 68 | 68 | 24.0 | 658 | 643 | 15 | 3 | 5 | Ted Kubiak | John Thurman Field | dnq |
| 1991 | OAK | Madison Muskies | Midw | A | team page | 138 | 77 | 61 | -- | 722 | 654 | 68 | 1 | 2 | Gary Jones | Warner Park | Lost in Finals |
| 1991 | OAK | Southern Oregon A's | Nwst | A- | team page | 76 | 40 | 36 | 10.0 | 429 | 397 | 32 | 3 | 4 | Grady Fuson | Miles Field | dnq |
| 1991 | OAK | Arizona Athletics | Ariz | Rk | team page | 60 | 39 | 21 | -- | 411 | 334 | 77 | 1 | 1 | Dick Scott | Scottsdale Stadium | dnq |
| 1991 | PHI | Philadelphia Phillies | MLB-NL | MLB | team page | 162 | 78 | 84 | 20.0 | 629 | 680 | -51 | 3 | 6 | Jim Fregosi, Nick Leyva | Veterans Stadium | dnq |
| 1991 | PHI | Scranton/Wilkes-Barre Red Barons | IL | AAA | team page | 143 | 65 | 78 | 14.0 | 666 | 700 | -34 | 4 | 7 | Bill Dancy | Lackawanna County Stadium | dnq |
| 1991 | PHI | Reading Phillies | East | AA | team page | 140 | 72 | 68 | 15.0 | 639 | 636 | 3 | 5 | 5 | Don McCormack | Reading Municipal Memorial Stadium | dnq |
| 1991 | PHI | Clearwater Phillies | FSL | A+ | team page | 130 | 81 | 49 | -- | 596 | 433 | 163 | 1 | 1 | Lee Elia | Jack Russell Memorial Stadium | Lost in Finals |
| 1991 | PHI | Spartanburg Phillies | SAL | A | team page | 140 | 70 | 70 | 21.0 | 563 | 525 | 38 | 3 | 6 | Mel Roberts | Duncan Park | dnq |
| 1991 | PHI | Batavia Clippers | NYPL | A- | team page | 78 | 38 | 40 | 9.5 | 352 | 369 | -17 | 3 | 7 | Ramon Aviles | Dwyer Stadium | dnq |
| 1991 | PHI | Martinsville Phillies | App | Rk | team page | 68 | 27 | 41 | 18.0 | 299 | 323 | -24 | 7 | 7 | Roly De Armas | Hooker Field | dnq |
| 1991 | PIT | Pittsburgh Pirates | MLB-NL | MLB | team page | 162 | 98 | 64 | -- | 768 | 632 | 136 | 1 | 1 | Jim Leyland | Three Rivers Stadium | Lost NLCS (Braves) |
| 1991 | PIT | Buffalo Bisons | Amer | AAA | team page | 143 | 81 | 62 | -- | 639 | 605 | 34 | 1 | 1 | Terry Collins | Pilot Field | Lost in Finals |
| 1991 | PIT | Carolina Mudcats | Sou | AA | team page | 142 | 66 | 76 | 21.0 | 486 | 568 | -82 | 5 | 8 | Marc Bombard | Five County Stadium | dnq |
| 1991 | PIT | Salem Buccaneers | Caro | A+ | team page | 140 | 63 | 77 | 8.5 | 634 | 696 | -62 | 3 | 6 | Stan Cliburn | Salem Municipal Stadium | dnq |
| 1991 | PIT | Augusta Pirates | SAL | A | team page | 142 | 68 | 74 | -- | 600 | 671 | -71 | 6 | 9 | Don Werner | Heaton Stadium | dnq |
| 1991 | PIT | Welland Pirates | NYPL | A- | team page | 77 | 30 | 47 | 20.5 | 328 | 382 | -54 | 6 | 13 | Lee Driggers | Welland Stadium | dnq |
| 1991 | PIT | Gulf Coast Pirates | GCL | Rk | team page | 59 | 30 | 29 | 1.5 | 278 | 252 | 26 | 3 | 8 | Woody Huyke | Pirate City Stadium | dnq |
| 1991 | SDN | San Diego Padres | MLB-NL | MLB | team page | 162 | 84 | 78 | 10.0 | 636 | 646 | -10 | 3 | 5 | Greg Riddoch | Jack Murphy Stadium | dnq |
| 1991 | SDN | Las Vegas Stars | PCL | AAA | team page | 140 | 65 | 75 | 16.0 | 738 | 830 | -92 | 5 | 8 | Jim Riggleman | Cashman Field | dnq |
| 1991 | SDN | Wichita Wranglers | Tex | AA | team page | 135 | 71 | 64 | 9.5 | 684 | 697 | -13 | 2 | 3 | Steve Lubratich | Lawrence-Dumont Stadium | dnq |
| 1991 | SDN | High Desert Mavericks | Calif | A+ | team page | 136 | 73 | 63 | -- | 873 | 772 | 101 | 2 | 3 | Bruce Bochy | Mavericks Stadium | League Champions |
| 1991 | SDN | Charleston (sc) Rainbows | SAL | A | team page | 141 | 69 | 72 | -- | 647 | 697 | -50 | 5 | 7 | Dave Trembley | College Park | dnq |
| 1991 | SDN | Waterloo Diamonds | Midw | A | team page | 138 | 75 | 63 | 5.5 | 607 | 507 | 100 | 2 | 4 | Bryan Little | Municipal Stadium | dnq |
| 1991 | SDN | Spokane Indians | Nwst | A- | team page | 76 | 24 | 52 | 20.0 | 357 | 526 | -169 | 4 | 8 | Gene Glynn | Avista Stadium | dnq |
| 1991 | SDN | Arizona Padres | Ariz | Rk | team page | 60 | 31 | 29 | 8.0 | 386 | 376 | 10 | 4 | 4 | Ken Berry | Scottsdale Stadium | dnq |
| 1991 | SFN | San Francisco Giants | MLB-NL | MLB | team page | 162 | 75 | 87 | 19.0 | 649 | 697 | -48 | 4 | 9 | Roger Craig | Candlestick Park | dnq |
| 1991 | SFN | Phoenix Firebirds | PCL | AAA | team page | 138 | 68 | 70 | 12.0 | 747 | 755 | -8 | 4 | 7 | Duane Espy | Phoenix Municipal Stadium | dnq |
| 1991 | SFN | Shreveport Captains | Tex | AA | team page | 136 | 86 | 50 | -- | 725 | 540 | 185 | 1 | 1 | Billy Evers | Fair Grounds Field | League Champions |
| 1991 | SFN | San Jose Giants | Calif | A+ | team page | 136 | 92 | 44 | -- | 726 | 450 | 276 | 1 | 1 | Ron Wotus | San Jose Municipal Stadium | Lost in Semi-Finals |
| 1991 | SFN | Clinton Giants | Midw | A | team page | 139 | 81 | 58 | -- | 596 | 465 | 131 | 1 | 1 | Jack Mull | Riverview Stadium | League Champions |
| 1991 | SFN | Everett Giants | Nwst | A- | team page | 76 | 37 | 39 | 7.0 | 383 | 396 | -13 | 3 | 5 | Mike Bubalo, Rob Ellis | Everett Memorial Stadium | dnq |
| 1991 | SFN | Arizona Giants | Ariz | Rk | team page | 60 | 14 | 46 | 25.0 | 305 | 445 | -140 | 7 | 7 | Nelson Rood | Scottsdale Stadium | dnq |
| 1991 | SEA | Seattle Mariners | MLB-AL | MLB | team page | 162 | 83 | 79 | 12.0 | 702 | 674 | 28 | 5 | 8 | Jim Lefebvre | The Kingdome | dnq |
| 1991 | SEA | Calgary Cannons | PCL | AAA | team page | 136 | 72 | 64 | -- | 808 | 744 | 64 | 1 | 3 | Keith Bodie | Foothills Stadium | Lost in Finals |
| 1991 | SEA | Jacksonville Suns | Sou | AA | team page | 143 | 74 | 69 | 13.5 | 594 | 539 | 55 | 4 | 4 | Jim Nettles | Sam W. Wolfson Baseball Park | dnq |
| 1991 | SEA | Peninsula Pilots | Caro | A+ | team page | 139 | 46 | 93 | 43.5 | 523 | 756 | -233 | 4 | 8 | Steve Smith | War Memorial Stadium | dnq |
| 1991 | SEA | San Bernardino Spirit | Calif | A+ | team page | 136 | 54 | 82 | -- | 586 | 785 | -199 | 5 | 10 | Thomas Jones | Perris Hill Park | dnq |
| 1991 | SEA | Bellingham Mariners | Nwst | A- | team page | 76 | 37 | 39 | 7.0 | 288 | 334 | -46 | 2 | 6 | Dave Myers | Joe Martin Field | dnq |
| 1991 | SEA | Arizona Mariners | Ariz | Rk | team page | 60 | 33 | 27 | 6.0 | 403 | 368 | 35 | 3 | 3 | Myron Pines | Peoria Sports Complex | dnq |
| 1991 | SLN | St. Louis Cardinals | MLB-NL | MLB | team page | 162 | 84 | 78 | 14.0 | 651 | 648 | 3 | 2 | 4 | Joe Torre | Busch Stadium II | dnq |
| 1991 | SLN | Louisville Redbirds | Amer | AAA | team page | 143 | 51 | 92 | 30.0 | 514 | 657 | -143 | 4 | 8 | Mark DeJohn | Cardinal Stadium | dnq |
| 1991 | SLN | Arkansas Travelers | Tex | AA | team page | 136 | 49 | 87 | 37.0 | 502 | 661 | -159 | 4 | 8 | Joe Pettini | Ray Winder Field | dnq |
| 1991 | SLN | St. Petersburg Cardinals | FSL | A+ | team page | 131 | 47 | 84 | 34.5 | 395 | 516 | -121 | 5 | 13 | Dave Bialas | Al Lang Field | dnq |
| 1991 | SLN | Savannah Cardinals | SAL | A | team page | 138 | 61 | 77 | -- | 589 | 650 | -61 | 7 | 11 | Larry Milbourne | Grayson Stadium | dnq |
| 1991 | SLN | Springfield Cardinals | Midw | A | team page | 137 | 58 | 79 | 22.0 | 521 | 683 | -162 | 7 | 13 | Mike Ramsey | Lanphier Park | dnq |
| 1991 | SLN | Hamilton Redbirds | NYPL | A- | team page | 77 | 35 | 42 | 15.5 | 345 | 367 | -22 | 4 | 11 | Rick Colbert | Bernie Arbour Memorial Stadium | dnq |
| 1991 | SLN | Arizona Cardinals | Ariz | Rk | team page | 59 | 29 | 30 | 9.5 | 351 | 394 | -43 | 9 | 5 | Keith Champion | Compadre Stadium | dnq |
| 1991 | SLN | Johnson City Cardinals | App | Rk | team page | 66 | 40 | 26 | 4.0 | 352 | 273 | 79 | 3 | 2 | Chris Maloney | Howard Johnson Field | dnq |
| 1991 | TEX | Texas Rangers | MLB-AL | MLB | team page | 162 | 85 | 77 | 10.0 | 829 | 814 | 15 | 3 | 4 | Bobby Valentine | Arlington Stadium | dnq |
| 1991 | TEX | Oklahoma City 89ers | Amer | AAA | team page | 144 | 52 | 92 | 27.0 | 660 | 779 | -119 | 4 | 7 | Tommy Thompson | All Sports Stadium | dnq |
| 1991 | TEX | Tulsa Drillers | Tex | AA | team page | 136 | 58 | 78 | 28.0 | 554 | 703 | -149 | 3 | 7 | Bob Jones | Drillers Stadium | dnq |
| 1991 | TEX | Charlotte Rangers | FSL | A+ | team page | 132 | 62 | 70 | 20.0 | 515 | 565 | -50 | 3 | 10 | Bob Molinaro | Charlotte County Stadium | dnq |
| 1991 | TEX | Gastonia Rangers | SAL | A | team page | 142 | 69 | 73 | 23.0 | 554 | 561 | -7 | 4 | 8 | Bump Wills | Sims Legion Park | dnq |
| 1991 | TEX | Butte Copper Kings | Pio | Rk | team page | 70 | 29 | 41 | 20.0 | 435 | 513 | -78 | 3 | 5 | Dick Egan | Alumni Coliseum | dnq |
| 1991 | TEX | Gulf Coast Rangers | GCL | Rk | team page | 59 | 30 | 29 | 5.0 | 233 | 218 | 15 | 3 | 7 | Chino Cadahia | Charlotte County Stadium | dnq |
| 1991 | TOR | Toronto Blue Jays | MLB-AL | MLB | team page | 162 | 91 | 71 | -- | 684 | 622 | 62 | 1 | 2 | Cito Gaston, Gene Tenace | SkyDome | Lost ALCS (Twins) |
| 1991 | TOR | Syracuse Chiefs | IL | AAA | team page | 144 | 73 | 71 | 6.5 | 683 | 702 | -19 | 3 | 6 | Leroy Stanton | MacArthur Stadium | dnq |
| 1991 | TOR | Knoxville Blue Jays | Sou | AA | team page | 144 | 67 | 77 | 10.5 | 529 | 525 | 4 | 3 | 7 | John Stearns | Bill Meyer Stadium | Lost in Semi-Finals |
| 1991 | TOR | Dunedin Blue Jays | FSL | A+ | team page | 131 | 59 | 72 | 22.5 | 438 | 492 | -54 | 4 | 12 | Dennis Holmberg | Dunedin Stadium | dnq |
| 1991 | TOR | Myrtle Beach Hurricanes | SAL | A | team page | 139 | 60 | 79 | -- | 563 | 628 | -65 | 8 | 12 | Garth Iorg | Watson Stadium | dnq |
| 1991 | TOR | St. Catharines Blue Jays | NYPL | A- | team page | 77 | 35 | 42 | 15.5 | 344 | 354 | -10 | 5 | 10 | Doug Ault | Community Park | dnq |
| 1991 | TOR | Gulf Coast Blue Jays | GCL | Rk | team page | 59 | 31 | 28 | 4.0 | 213 | 230 | -17 | 2 | 4 | Omar Malave | Bobby Mattick Training Center | dnq |
| 1991 | TOR | Medicine Hat Blue Jays | Pio | Rk | team page | 69 | 24 | 45 | 21.5 | 351 | 411 | -60 | 4 | 7 | Joe Cannon | Athletic Park | dnq |