| 1979-04-05 | @ LAN | 1 | W 4-3 | 1-0 | 1 | 46,536 | Gaylord Perry | Burt Hooton | Gaylord Perry | Lance Rautzhan | Rollie Fingers | 4 | 3 | 1 |
| 1979-04-06 | @ LAN | 2 | L 1-10 | 1-1 | 4 | 35,979 | Randy Jones | Don Sutton | Don Sutton | Randy Jones | | 5 | 13 | -8 |
| 1979-04-07 | @ LAN | 3 | L 2-5 | 1-2 | 4 | 44,327 | Eric Rasmussen | Andy Messersmith | Andy Messersmith | Eric Rasmussen | Lance Rautzhan | 7 | 18 | -11 |
| 1979-04-08 | @ LAN | 4 | L 5-6 | 1-3 | 5 | 39,562 | Bob Owchinko | Doug Rau | Rick Sutcliffe | Bob Shirley | | 12 | 24 | -12 |
| 1979-04-10 | @ SFN | 5 | L 2-4 | 1-4 | 6 | 56,196 | Gaylord Perry | Vida Blue | Vida Blue | John D'Acquisto | | 14 | 28 | -14 |
| 1979-04-11 | @ SFN | 6 | W 4-1 | 2-4 | 5 | 17,778 | Randy Jones | John Montefusco | Randy Jones | John Montefusco | Rollie Fingers | 18 | 29 | -11 |
| 1979-04-12 | @ SFN | 7 | L 3-4 | 2-5 | 6 | 14,082 | Eric Rasmussen | Bob Knepper | Bob Knepper | Eric Rasmussen | Dave Roberts | 21 | 33 | -12 |
| 1979-04-13 | vs CIN | 8 | L 2-4 | 2-6 | 6 | 44,858 | Bob Shirley | Bill Bonham | Bill Bonham | Bob Shirley | Frank Pastore | 23 | 37 | -14 |
| 1979-04-14 | vs CIN | 9 | W 3-2 | 3-6 | 6 | 24,644 | Gaylord Perry | Tom Seaver | Gaylord Perry | Tom Seaver | | 26 | 39 | -13 |
| 1979-04-15 | vs CIN | 10 | W 6-3 | 4-7 | 6 | 0 | Randy Jones | Fred Norman | Randy Jones | Fred Norman | John D'Acquisto | 32 | 42 | -10 |
| 1979-04-15 | vs CIN | 11 | L 5-7 | 4-7 | 6 | 31,842 | Mickey Lolich | Mike LaCoss | Doug Capilla | Mark Lee | Doug Bair | 37 | 49 | -12 |
| 1979-04-17 | vs SFN | 12 | W 4-3 | 5-7 | 5 | 16,734 | Eric Rasmussen | Bob Knepper | Rollie Fingers | Bob Knepper | | 41 | 52 | -11 |
| 1979-04-18 | vs SFN | 13 | W 7-6 | 6-7 | 4 | 18,811 | Bob Shirley | Ed Halicki | Steve Mura | Tom Griffin | | 48 | 58 | -10 |
| 1979-04-19 | vs SFN | 14 | L 10-14 | 6-8 | 5 | 27,366 | Mickey Lolich | Vida Blue | Vida Blue | Mickey Lolich | | 58 | 72 | -14 |
| 1979-04-20 | @ ATL | 15 | W 7-4 | 7-8 | 4 | 10,205 | Randy Jones | Rick Matula | Randy Jones | Rick Matula | | 65 | 76 | -11 |
| 1979-04-21 | @ ATL | 16 | W 9-5 | 8-8 | 4 | 28,950 | Eric Rasmussen | Eddie Solomon | John D'Acquisto | Gene Garber | | 74 | 81 | -7 |
| 1979-04-22 | @ ATL | 17 | L 7-8 | 8-9 | 5 | 4,513 | Steve Mura | Larry McWilliams | Gene Garber | Rollie Fingers | | 81 | 89 | -8 |
| 1979-04-24 | @ MON | 18 | L 1-5 | 8-10 | 4 | 5,152 | Randy Jones | Ross Grimsley | Ross Grimsley | Randy Jones | | 82 | 94 | -12 |
| 1979-04-25 | @ MON | 19 | L 6-9 | 8-11 | 4 | 5,812 | Bob Shirley | Steve Rogers | Steve Rogers | Bob Shirley | David Palmer | 88 | 103 | -15 |
| 1979-04-27 | @ PHI | 20 | L 0-2 | 8-12 | 5 | 28,522 | Gaylord Perry | Nino Espinosa | Nino Espinosa | Gaylord Perry | | 88 | 105 | -17 |
| 1979-04-28 | @ PHI | 21 | W 5-0 | 9-12 | 4 | 31,633 | Randy Jones | Steve Carlton | John D'Acquisto | Steve Carlton | | 93 | 105 | -12 |
| 1979-04-29 | @ PHI | 22 | L 3-4 | 9-13 | 4 | 50,722 | Steve Mura | Randy Lerch | Ron Reed | Rollie Fingers | | 96 | 109 | -13 |
| 1979-04-30 | @ NYN | 23 | L 3-4 | 9-14 | 4 | 6,154 | Bob Owchinko | Craig Swan | Craig Swan | Bob Shirley | Skip Lockwood | 99 | 113 | -14 |
| 1979-05-01 | @ NYN | 24 | W 10-5 | 10-14 | 3 | 5,614 | Gaylord Perry | Wayne Twitchell | Gaylord Perry | Dale Murray | Rollie Fingers | 109 | 118 | -9 |
| 1979-05-03 | vs MON | 25 | W 10-2 | 11-14 | 3 | 10,467 | Randy Jones | Scott Sanderson | Randy Jones | Scott Sanderson | Rollie Fingers | 119 | 120 | -1 |
| 1979-05-04 | vs MON | 26 | L 1-12 | 11-15 | 4 | 20,309 | John D'Acquisto | Ross Grimsley | Ross Grimsley | John D'Acquisto | | 120 | 132 | -12 |
| 1979-05-05 | vs MON | 27 | W 6-3 | 12-15 | 4 | 45,500 | Steve Mura | Steve Rogers | Steve Mura | Woodie Fryman | Rollie Fingers | 126 | 135 | -9 |
| 1979-05-06 | vs MON | 28 | L 5-7 | 12-16 | 4 | 21,034 | Gaylord Perry | Bill Lee | Bill Lee | Gaylord Perry | Woodie Fryman | 131 | 142 | -11 |
| 1979-05-07 | vs PHI | 29 | L 6-11 | 12-17 | 4 | 20,766 | Bob Owchinko | Steve Carlton | Steve Carlton | Bob Owchinko | Rawly Eastwick | 137 | 153 | -16 |
| 1979-05-08 | vs PHI | 30 | L 8-9 | 12-18 | 5 | 12,288 | Randy Jones | Randy Lerch | Jim Kaat | John D'Acquisto | | 145 | 162 | -17 |
| 1979-05-09 | vs PHI | 31 | L 0-2 | 12-19 | 5 | 15,606 | Eric Rasmussen | Dick Ruthven | Dick Ruthven | Eric Rasmussen | | 145 | 164 | -19 |
| 1979-05-10 | vs PHI | 32 | L 2-3 | 12-20 | 5 | 17,208 | Gaylord Perry | Nino Espinosa | Nino Espinosa | Gaylord Perry | Ron Reed | 147 | 167 | -20 |
| 1979-05-11 | vs NYN | 33 | L 0-4 | 12-21 | 5 | 43,142 | Steve Mura | Kevin Kobel | Kevin Kobel | Steve Mura | | 147 | 171 | -24 |
| 1979-05-12 | vs NYN | 34 | W 2-1 | 13-21 | 5 | 18,409 | Bob Owchinko | Pete Falcone | Bob Owchinko | Neil Allen | | 149 | 172 | -23 |
| 1979-05-13 | vs NYN | 35 | W 5-4 | 14-21 | 5 | 12,245 | Randy Jones | Mike Scott | Bob Shirley | Skip Lockwood | | 154 | 176 | -22 |
| 1979-05-14 | @ CIN | 36 | L 4-7 | 14-22 | 5 | 19,133 | Eric Rasmussen | Paul Moskau | Paul Moskau | Eric Rasmussen | Dave Tomlin | 158 | 183 | -25 |
| 1979-05-15 | @ CIN | 37 | W 2-1 | 15-22 | 5 | 20,090 | Gaylord Perry | Tom Hume | Rollie Fingers | Frank Pastore | | 160 | 184 | -24 |
| 1979-05-16 | @ CIN | 38 | L 0-7 | 15-23 | 5 | 25,327 | Steve Mura | Bill Bonham | Bill Bonham | Steve Mura | | 160 | 191 | -31 |
| 1979-05-18 | @ HOU | 39 | L 2-3 | 15-24 | 5 | 9,445 | Bob Owchinko | Joe Niekro | Joe Niekro | Rollie Fingers | | 162 | 194 | -32 |
| 1979-05-19 | @ HOU | 40 | W 4-2 | 16-24 | 5 | 18,494 | Randy Jones | J.R. Richard | Rollie Fingers | J.R. Richard | | 166 | 196 | -30 |
| 1979-05-20 | @ HOU | 41 | L 0-1 | 16-26 | 5 | 0 | Gaylord Perry | Rick Williams | Rick Williams | Gaylord Perry | | 166 | 197 | -31 |
| 1979-05-20 | @ HOU | 42 | L 3-6 | 16-26 | 5 | 15,039 | Mickey Lolich | Randy Niemann | Joaquin Andujar | John D'Acquisto | | 169 | 203 | -34 |
| 1979-05-21 | vs LAN | 43 | W 3-2 | 17-26 | 5 | 20,981 | Eric Rasmussen | Andy Messersmith | Eric Rasmussen | Andy Messersmith | | 172 | 205 | -33 |
| 1979-05-22 | vs LAN | 44 | W 7-6 | 18-26 | 5 | 29,830 | Bob Owchinko | Doug Rau | Rollie Fingers | Jerry Reuss | | 179 | 211 | -32 |
| 1979-05-23 | vs LAN | 45 | L 2-4 | 18-27 | 5 | 29,158 | Randy Jones | Burt Hooton | Burt Hooton | Randy Jones | | 181 | 215 | -34 |
| 1979-05-25 | vs HOU | 46 | W 2-1 | 19-27 | 5 | 15,289 | Gaylord Perry | Rick Williams | Rollie Fingers | Joe Sambito | | 183 | 216 | -33 |
| 1979-05-26 | vs HOU | 47 | L 0-9 | 19-28 | 5 | 27,331 | Mickey Lolich | Joe Niekro | Joe Niekro | Mickey Lolich | | 183 | 225 | -42 |
| 1979-05-27 | vs HOU | 48 | L 2-4 | 19-29 | 5 | 17,199 | Eric Rasmussen | J.R. Richard | J.R. Richard | Eric Rasmussen | | 185 | 229 | -44 |
| 1979-05-28 | vs HOU | 49 | W 5-4 | 20-29 | 5 | 14,728 | Randy Jones | Joaquin Andujar | Randy Jones | Joaquin Andujar | Rollie Fingers | 190 | 233 | -43 |
| 1979-05-29 | vs ATL | 50 | W 6-3 | 22-29 | 5 | 0 | Gaylord Perry | Tony Brizzolara | Gaylord Perry | Tony Brizzolara | | 196 | 236 | -40 |
| 1979-05-29 | vs ATL | 51 | W 3-2 | 22-29 | 5 | 15,340 | Bob Owchinko | Phil Niekro | Bob Owchinko | Phil Niekro | Rollie Fingers | 199 | 238 | -39 |
| 1979-05-30 | vs ATL | 52 | W 10-2 | 23-29 | 5 | 12,335 | Mickey Lolich | Bo McLaughlin | Bob Shirley | Bo McLaughlin | | 209 | 240 | -31 |
| 1979-05-31 | vs ATL | 53 | W 3-1 | 24-29 | 5 | 11,143 | Eric Rasmussen | Rick Matula | Eric Rasmussen | Rick Matula | Rollie Fingers | 212 | 241 | -29 |
| 1979-06-01 | @ PIT | 54 | L 8-9 | 24-30 | 5 | 12,928 | Randy Jones | Ed Whitson | Kent Tekulve | Bob Shirley | | 220 | 250 | -30 |
| 1979-06-02 | @ PIT | 55 | W 3-1 | 25-30 | 5 | 20,977 | Gaylord Perry | John Candelaria | Gaylord Perry | John Candelaria | | 223 | 251 | -28 |
| 1979-06-03 | @ PIT | 56 | L 0-7 | 25-31 | 5 | 13,370 | Bob Owchinko | Bruce Kison | Bruce Kison | Bob Owchinko | | 223 | 258 | -35 |
| 1979-06-05 | @ CHN | 57 | W 11-3 | 26-31 | 5 | 12,675 | Eric Rasmussen | Dennis Lamp | Eric Rasmussen | Dennis Lamp | | 234 | 261 | -27 |
| 1979-06-06 | @ CHN | 58 | L 0-3 | 26-32 | 5 | 12,145 | Randy Jones | Rick Reuschel | Rick Reuschel | Randy Jones | Bruce Sutter | 234 | 264 | -30 |
| 1979-06-07 | @ CHN | 59 | L 3-4 | 26-33 | 5 | 5,775 | Gaylord Perry | Ken Holtzman | Lynn McGlothen | Bob Shirley | Bruce Sutter | 237 | 268 | -31 |
| 1979-06-08 | @ SLN | 60 | W 8-7 | 27-33 | 5 | 18,943 | Bob Owchinko | Bob Forsch | Rollie Fingers | Darold Knowles | John D'Acquisto | 245 | 275 | -30 |
| 1979-06-09 | @ SLN | 61 | L 4-7 | 27-34 | 5 | 26,695 | Eric Rasmussen | Pete Vuckovich | Pete Vuckovich | Eric Rasmussen | | 249 | 282 | -33 |
| 1979-06-10 | @ SLN | 62 | L 2-3 | 27-35 | 5 | 33,136 | Randy Jones | Silvio Martinez | Silvio Martinez | Randy Jones | Buddy Schultz | 251 | 285 | -34 |
| 1979-06-12 | vs PIT | 63 | W 6-3 | 28-35 | 5 | 23,759 | Gaylord Perry | John Candelaria | Gaylord Perry | John Candelaria | | 257 | 288 | -31 |
| 1979-06-13 | vs PIT | 64 | W 3-2 | 29-35 | 5 | 17,845 | Bob Owchinko | Bruce Kison | Bob Owchinko | Bruce Kison | Rollie Fingers | 260 | 290 | -30 |
| 1979-06-14 | vs PIT | 65 | W 2-1 | 30-35 | 5 | 15,444 | Randy Jones | Jim Rooker | John D'Acquisto | John Candelaria | | 262 | 291 | -29 |
| 1979-06-15 | vs CHN | 66 | L 2-3 | 30-36 | 5 | 23,595 | Eric Rasmussen | Rick Reuschel | Guillermo Hernandez | John D'Acquisto | Dick Tidrow | 264 | 294 | -30 |
| 1979-06-16 | vs CHN | 67 | L 2-5 | 30-37 | 5 | 27,713 | Gaylord Perry | Ken Holtzman | Ken Holtzman | Gaylord Perry | Bruce Sutter | 266 | 299 | -33 |
| 1979-06-17 | vs CHN | 68 | L 5-8 | 30-38 | 5 | 17,166 | Bob Owchinko | Mike Krukow | Mike Krukow | Bob Owchinko | Bruce Sutter | 271 | 307 | -36 |
| 1979-06-18 | vs SLN | 69 | W 3-2 | 31-38 | 5 | 18,921 | Randy Jones | Bob Forsch | Randy Jones | Bob Forsch | Rollie Fingers | 274 | 309 | -35 |
| 1979-06-19 | vs SLN | 70 | L 2-7 | 31-39 | 5 | 20,216 | Eric Rasmussen | John Fulgham | John Fulgham | Eric Rasmussen | | 276 | 316 | -40 |
| 1979-06-20 | vs SLN | 71 | W 3-1 | 32-39 | 4 | 20,653 | Gaylord Perry | Pete Vuckovich | Gaylord Perry | Pete Vuckovich | | 279 | 317 | -38 |
| 1979-06-22 | @ HOU | 72 | L 1-2 | 32-40 | 5 | 30,954 | Bob Shirley | Joe Niekro | Joe Niekro | Bob Shirley | Joe Sambito | 280 | 319 | -39 |
| 1979-06-23 | @ HOU | 73 | L 2-3 | 32-41 | 5 | 41,429 | Randy Jones | Rick Williams | Tom Dixon | Rollie Fingers | | 282 | 322 | -40 |
| 1979-06-24 | @ HOU | 74 | L 1-4 | 32-42 | 5 | 19,315 | Eric Rasmussen | Joaquin Andujar | Joaquin Andujar | Eric Rasmussen | | 283 | 326 | -43 |
| 1979-06-25 | @ LAN | 75 | L 3-4 | 32-43 | 5 | 29,142 | Gaylord Perry | Rick Sutcliffe | Ken Brett | Rollie Fingers | | 286 | 330 | -44 |
| 1979-06-26 | @ LAN | 76 | W 5-1 | 33-43 | 5 | 35,001 | Bob Shirley | Don Sutton | Bob Shirley | Don Sutton | | 291 | 331 | -40 |
| 1979-06-27 | vs ATL | 77 | W 2-1 | 34-44 | 4 | 0 | Randy Jones | Phil Niekro | Rollie Fingers | Phil Niekro | | 293 | 332 | -39 |
| 1979-06-27 | vs ATL | 78 | L 2-5 | 34-44 | 4 | 16,032 | Bob Owchinko | Larry McWilliams | Joey McLaughlin | Bob Owchinko | Gene Garber | 295 | 337 | -42 |
| 1979-06-28 | vs ATL | 79 | W 6-5 | 35-44 | 4 | 11,148 | Eric Rasmussen | Tony Brizzolara | John D'Acquisto | Tony Brizzolara | Rollie Fingers | 301 | 342 | -41 |
| 1979-06-29 | vs HOU | 80 | L 1-4 | 35-45 | 4 | 41,822 | Gaylord Perry | Joaquin Andujar | Joaquin Andujar | Gaylord Perry | | 302 | 346 | -44 |
| 1979-06-30 | vs HOU | 81 | L 0-3 | 35-46 | 4 | 20,154 | Bob Shirley | J.R. Richard | J.R. Richard | Bob Shirley | | 302 | 349 | -47 |
| 1979-07-01 | vs HOU | 82 | L 1-4 | 35-47 | 4 | 11,615 | Randy Jones | Joe Niekro | Joe Niekro | Randy Jones | Joe Sambito | 303 | 353 | -50 |
| 1979-07-02 | vs LAN | 83 | L 3-6 | 35-48 | 4 | 13,535 | John D'Acquisto | Burt Hooton | Ken Brett | Bob Owchinko | | 306 | 359 | -53 |
| 1979-07-03 | vs LAN | 84 | W 3-2 | 36-48 | 4 | 24,674 | Gaylord Perry | Rick Sutcliffe | Gaylord Perry | Rick Sutcliffe | | 309 | 361 | -52 |
| 1979-07-04 | vs LAN | 85 | W 6-0 | 37-48 | 4 | 45,481 | Bob Shirley | Don Sutton | Bob Shirley | Don Sutton | | 315 | 361 | -46 |
| 1979-07-06 | @ NYN | 86 | W 6-5 | 38-48 | 4 | 10,021 | Randy Jones | Pete Falcone | Mark Lee | Tom Hausman | | 321 | 366 | -45 |
| 1979-07-07 | @ NYN | 87 | W 11-3 | 39-48 | 4 | 14,048 | John D'Acquisto | Dock Ellis | John D'Acquisto | Dock Ellis | Eric Rasmussen | 332 | 369 | -37 |
| 1979-07-08 | @ NYN | 88 | W 5-3 | 40-49 | 4 | 0 | Gaylord Perry | Kevin Kobel | Gaylord Perry | Kevin Kobel | | 337 | 372 | -35 |
| 1979-07-08 | @ NYN | 89 | L 1-4 | 40-49 | 4 | 17,320 | Bob Shirley | Andy Hassler | Andy Hassler | Bob Shirley | Tom Hausman | 338 | 376 | -38 |
| 1979-07-10 | @ PHI | 90 | L 5-6 | 40-50 | 4 | 30,234 | Randy Jones | Nino Espinosa | Doug Bird | Rollie Fingers | | 343 | 382 | -39 |
| 1979-07-11 | @ PHI | 91 | W 7-3 | 41-50 | 4 | 35,248 | John D'Acquisto | Randy Lerch | John D'Acquisto | Randy Lerch | | 350 | 385 | -35 |
| 1979-07-12 | @ PHI | 92 | L 3-4 | 41-51 | 4 | 33,501 | Bob Shirley | Steve Carlton | Steve Carlton | Rollie Fingers | Tug McGraw | 353 | 389 | -36 |
| 1979-07-13 | @ MON | 93 | W 7-5 | 42-52 | 4 | 0 | Gaylord Perry | Ross Grimsley | Bob Owchinko | Elias Sosa | Rollie Fingers | 360 | 394 | -34 |
| 1979-07-13 | @ MON | 94 | L 7-10 | 42-52 | 4 | 44,549 | Eric Rasmussen | David Palmer | Rudy May | Bob Owchinko | Woodie Fryman | 367 | 404 | -37 |
| 1979-07-14 | @ MON | 95 | W 5-1 | 43-52 | 4 | 27,826 | Randy Jones | Bill Lee | Randy Jones | Bill Lee | | 372 | 405 | -33 |
| 1979-07-15 | @ MON | 96 | L 0-4 | 43-53 | 4 | 27,747 | John D'Acquisto | Scott Sanderson | Scott Sanderson | John D'Acquisto | Elias Sosa | 372 | 409 | -37 |
| 1979-07-19 | vs NYN | 97 | W 3-1 | 44-53 | 4 | 20,382 | Randy Jones | Kevin Kobel | Randy Jones | Kevin Kobel | | 375 | 410 | -35 |
| 1979-07-20 | vs NYN | 98 | W 2-1 | 45-53 | 4 | 16,381 | Gaylord Perry | Craig Swan | Gaylord Perry | Craig Swan | | 377 | 411 | -34 |
| 1979-07-21 | vs NYN | 99 | L 1-2 | 45-54 | 4 | 25,327 | Bob Shirley | Tom Hausman | Neil Allen | Bob Shirley | Andy Hassler | 378 | 413 | -35 |
| 1979-07-22 | vs PHI | 100 | L 2-5 | 45-55 | 4 | 23,308 | John D'Acquisto | Nino Espinosa | Nino Espinosa | John D'Acquisto | Tug McGraw | 380 | 418 | -38 |
| 1979-07-23 | vs PHI | 101 | W 6-5 | 46-55 | 4 | 16,785 | Randy Jones | Dickie Noles | Rollie Fingers | Ron Reed | | 386 | 423 | -37 |
| 1979-07-24 | vs MON | 102 | W 4-3 | 47-55 | 4 | 16,190 | Gaylord Perry | Steve Rogers | Steve Mura | David Palmer | | 390 | 426 | -36 |
| 1979-07-25 | vs MON | 103 | L 5-6 | 47-56 | 4 | 14,758 | Bob Shirley | Bill Lee | Rudy May | Bob Owchinko | Elias Sosa | 395 | 432 | -37 |
| 1979-07-26 | vs SFN | 104 | L 2-6 | 47-57 | 4 | 15,883 | John D'Acquisto | Ed Whitson | Ed Whitson | John D'Acquisto | Gary Lavelle | 397 | 438 | -41 |
| 1979-07-27 | vs SFN | 105 | L 3-4 | 47-58 | 4 | 20,577 | Randy Jones | Vida Blue | Pedro Borbon | Mark Lee | | 400 | 442 | -42 |
| 1979-07-28 | vs SFN | 106 | W 4-3 | 48-58 | 4 | 22,815 | Gaylord Perry | John Curtis | Rollie Fingers | Pedro Borbon | | 404 | 445 | -41 |
| 1979-07-29 | vs SFN | 107 | L 2-4 | 48-59 | 4 | 15,878 | Bob Shirley | John Montefusco | John Montefusco | Bob Shirley | Gary Lavelle | 406 | 449 | -43 |
| 1979-07-31 | @ ATL | 108 | W 10-3 | 49-59 | 4 | 9,501 | John D'Acquisto | Phil Niekro | John D'Acquisto | Phil Niekro | Mark Lee | 416 | 452 | -36 |
| 1979-08-01 | @ ATL | 109 | L 4-5 | 49-60 | 4 | 5,062 | Randy Jones | Eddie Solomon | Joey McLaughlin | Rollie Fingers | Gene Garber | 420 | 457 | -37 |
| 1979-08-02 | @ ATL | 110 | L 2-7 | 49-61 | 4 | 7,916 | Gaylord Perry | Tony Brizzolara | Tony Brizzolara | Gaylord Perry | | 422 | 464 | -42 |
| 1979-08-03 | @ CIN | 111 | W 6-4 | 50-61 | 4 | 35,311 | Bob Shirley | Bill Bonham | Bob Shirley | Bill Bonham | Mark Lee | 428 | 468 | -40 |
| 1979-08-04 | @ CIN | 112 | L 1-7 | 50-62 | 4 | 37,453 | John D'Acquisto | Fred Norman | Fred Norman | John D'Acquisto | | 429 | 475 | -46 |
| 1979-08-05 | @ CIN | 113 | L 1-9 | 50-63 | 4 | 42,812 | Randy Jones | Frank Pastore | Frank Pastore | Randy Jones | | 430 | 484 | -54 |
| 1979-08-07 | @ SFN | 114 | L 2-3 | 50-64 | 4 | 24,473 | Gaylord Perry | Vida Blue | Vida Blue | Gaylord Perry | Gary Lavelle | 432 | 487 | -55 |
| 1979-08-08 | @ SFN | 115 | L 7-10 | 50-65 | 4 | 8,894 | Bob Shirley | John Curtis | John Curtis | Bob Shirley | Gary Lavelle | 439 | 497 | -58 |
| 1979-08-09 | @ SFN | 116 | W 4-0 | 51-65 | 4 | 8,556 | John D'Acquisto | John Montefusco | John D'Acquisto | Greg Minton | | 443 | 497 | -54 |
| 1979-08-10 | vs CIN | 117 | W 3-2 | 52-65 | 4 | 25,261 | Randy Jones | Frank Pastore | Randy Jones | Frank Pastore | | 446 | 499 | -53 |
| 1979-08-12 | vs CIN | 118 | L 2-9 | 53-66 | 4 | 0 | Gaylord Perry | Tom Seaver | Tom Seaver | Gaylord Perry | | 448 | 508 | -60 |
| 1979-08-12 | vs CIN | 119 | W 5-4 | 53-66 | 4 | 25,049 | Bob Shirley | Mike LaCoss | Mark Lee | Mike LaCoss | Eric Rasmussen | 453 | 512 | -59 |
| 1979-08-14 | @ PIT | 120 | L 1-7 | 53-67 | 5 | 23,210 | John D'Acquisto | John Candelaria | John Candelaria | John D'Acquisto | | 454 | 519 | -65 |
| 1979-08-15 | @ PIT | 121 | L 1-5 | 53-68 | 5 | 14,219 | Randy Jones | Bert Blyleven | Bert Blyleven | Randy Jones | | 455 | 524 | -69 |
| 1979-08-16 | @ PIT | 122 | L 4-5 | 53-69 | 5 | 14,201 | Gaylord Perry | Bruce Kison | Bruce Kison | Gaylord Perry | Enrique Romo | 459 | 529 | -70 |
| 1979-08-17 | @ CHN | 123 | L 6-9 | 53-70 | 5 | 19,099 | Bob Shirley | Bill Caudill | Dick Tidrow | John D'Acquisto | Bruce Sutter | 465 | 538 | -73 |
| 1979-08-18 | @ CHN | 124 | L 2-3 | 53-71 | 5 | 24,881 | Bob Owchinko | Mike Krukow | Dick Tidrow | Rollie Fingers | | 467 | 541 | -74 |
| 1979-08-19 | @ CHN | 125 | L 1-3 | 53-72 | 5 | 31,750 | Randy Jones | Rick Reuschel | Rick Reuschel | Randy Jones | Bruce Sutter | 468 | 544 | -76 |
| 1979-08-20 | @ SLN | 126 | L 3-6 | 53-73 | 5 | 12,372 | Gaylord Perry | Silvio Martinez | Silvio Martinez | Gaylord Perry | | 471 | 550 | -79 |
| 1979-08-21 | @ SLN | 127 | W 3-2 | 54-73 | 5 | 14,068 | Bob Shirley | Bob Forsch | Bob Shirley | Will McEnaney | Rollie Fingers | 474 | 552 | -78 |
| 1979-08-22 | @ SLN | 128 | L 5-8 | 54-74 | 5 | 13,668 | Bob Owchinko | John Fulgham | John Fulgham | Bob Owchinko | | 479 | 560 | -81 |
| 1979-08-24 | vs PIT | 129 | W 3-2 | 55-74 | 5 | 16,890 | Randy Jones | John Candelaria | Randy Jones | Enrique Romo | Mark Lee | 482 | 562 | -80 |
| 1979-08-25 | vs PIT | 130 | L 3-4 | 55-75 | 5 | 14,607 | Gaylord Perry | Bert Blyleven | Dave Roberts | John D'Acquisto | | 485 | 566 | -81 |
| 1979-08-26 | vs PIT | 131 | L 2-9 | 55-76 | 5 | 13,006 | Bob Shirley | Bruce Kison | Bruce Kison | Bob Shirley | | 487 | 575 | -88 |
| 1979-08-27 | vs CHN | 132 | W 5-4 | 56-76 | 5 | 14,274 | Bob Owchinko | Mike Krukow | John D'Acquisto | Guillermo Hernandez | | 492 | 579 | -87 |
| 1979-08-28 | vs CHN | 133 | L 1-3 | 56-77 | 5 | 13,515 | Randy Jones | Rick Reuschel | Rick Reuschel | Randy Jones | Bruce Sutter | 493 | 582 | -89 |
| 1979-08-29 | vs CHN | 134 | W 3-1 | 57-77 | 5 | 12,906 | Gaylord Perry | Lynn McGlothen | Gaylord Perry | Lynn McGlothen | | 496 | 583 | -87 |
| 1979-08-31 | vs SLN | 135 | L 7-8 | 57-78 | 5 | 11,414 | Bob Shirley | John Denny | Dan O'Brien | Bob Owchinko | | 503 | 591 | -88 |
| 1979-09-01 | vs SLN | 136 | L 3-5 | 57-79 | 5 | 12,323 | Randy Jones | Silvio Martinez | Silvio Martinez | Randy Jones | | 506 | 596 | -90 |
| 1979-09-02 | vs SLN | 137 | L 1-2 | 57-80 | 5 | 8,987 | Bob Owchinko | Bob Forsch | Bob Forsch | Mark Lee | | 507 | 598 | -91 |
| 1979-09-03 | vs SFN | 138 | W 3-0 | 58-80 | 5 | 7,333 | Gaylord Perry | Ed Whitson | Gaylord Perry | Ed Whitson | Eric Rasmussen | 510 | 598 | -88 |
| 1979-09-04 | vs SFN | 139 | L 1-3 | 58-81 | 5 | 7,128 | Bob Shirley | John Curtis | John Curtis | Bob Shirley | Gary Lavelle | 511 | 601 | -90 |
| 1979-09-05 | @ HOU | 140 | L 3-4 | 58-82 | 5 | 12,592 | Randy Jones | Ken Forsch | Joe Sambito | John D'Acquisto | | 514 | 605 | -91 |
| 1979-09-06 | @ HOU | 141 | L 0-2 | 58-83 | 5 | 12,416 | Bob Owchinko | J.R. Richard | J.R. Richard | Bob Owchinko | | 514 | 607 | -93 |
| 1979-09-07 | @ ATL | 142 | W 8-0 | 59-83 | 5 | 2,976 | Eric Rasmussen | Eddie Solomon | Eric Rasmussen | Eddie Solomon | | 522 | 607 | -85 |
| 1979-09-08 | @ ATL | 143 | W 9-2 | 60-83 | 5 | 4,261 | Bob Shirley | Rick Matula | Bob Shirley | Rick Matula | | 531 | 609 | -78 |
| 1979-09-09 | @ ATL | 144 | W 4-1 | 61-83 | 5 | 2,782 | Randy Jones | Phil Niekro | Randy Jones | Phil Niekro | Steve Mura | 535 | 610 | -75 |
| 1979-09-11 | @ LAN | 145 | W 3-1 | 62-83 | 5 | 20,870 | Bob Owchinko | Don Sutton | Bob Owchinko | Don Sutton | Steve Mura | 538 | 611 | -73 |
| 1979-09-12 | @ LAN | 146 | L 2-5 | 62-84 | 5 | 20,600 | Eric Rasmussen | Charlie Hough | Charlie Hough | Eric Rasmussen | Bobby Castillo | 540 | 616 | -76 |
| 1979-09-13 | @ LAN | 147 | L 6-8 | 62-85 | 5 | 21,972 | Bob Shirley | Jerry Reuss | Jerry Reuss | Bob Shirley | Ken Brett | 546 | 624 | -78 |
| 1979-09-14 | vs ATL | 148 | L 7-10 | 62-86 | 5 | 9,116 | Randy Jones | Tommy Boggs | Mickey Mahler | Mark Lee | Gene Garber | 553 | 634 | -81 |
| 1979-09-15 | vs ATL | 149 | L 1-6 | 62-87 | 5 | 8,721 | Juan Eichelberger | Rick Matula | Rick Matula | Juan Eichelberger | Larry Bradford | 554 | 640 | -86 |
| 1979-09-17 | vs HOU | 150 | L 0-1 | 62-88 | 5 | 9,452 | Bob Owchinko | Joe Niekro | Joe Niekro | Bob Owchinko | | 554 | 641 | -87 |
| 1979-09-18 | vs HOU | 151 | W 4-0 | 63-88 | 5 | 6,349 | Eric Rasmussen | Rick Williams | Eric Rasmussen | Rick Williams | | 558 | 641 | -83 |
| 1979-09-19 | vs CIN | 152 | L 2-3 | 63-89 | 5 | 10,215 | Bob Shirley | Bill Bonham | Bill Bonham | Bob Shirley | Tom Hume | 560 | 644 | -84 |
| 1979-09-20 | vs CIN | 153 | L 5-8 | 63-90 | 5 | 9,997 | Randy Jones | Fred Norman | Doug Bair | Steve Mura | | 565 | 652 | -87 |
| 1979-09-21 | vs LAN | 154 | W 3-1 | 64-90 | 5 | 16,514 | Juan Eichelberger | Gerry Hannahs | Juan Eichelberger | Gerry Hannahs | | 568 | 653 | -85 |
| 1979-09-22 | vs LAN | 155 | W 10-8 | 65-90 | 5 | 16,299 | Bob Owchinko | Charlie Hough | Steve Mura | Dave Patterson | Mark Lee | 578 | 661 | -83 |
| 1979-09-23 | vs LAN | 156 | L 2-5 | 65-91 | 5 | 15,171 | Eric Rasmussen | Jerry Reuss | Lerrin LaGrow | Steve Mura | Don Sutton | 580 | 666 | -86 |
| 1979-09-25 | @ CIN | 157 | W 8-2 | 66-91 | 5 | 20,336 | Bob Shirley | Fred Norman | Bob Shirley | Fred Norman | | 588 | 668 | -80 |
| 1979-09-26 | @ CIN | 158 | L 3-4 | 66-92 | 5 | 21,146 | Randy Jones | Tom Seaver | Tom Seaver | Randy Jones | Tom Hume | 591 | 672 | -81 |
| 1979-09-28 | @ SFN | 159 | W 2-0 | 67-92 | 5 | 2,861 | Eric Rasmussen | Ed Whitson | Eric Rasmussen | Ed Whitson | | 593 | 672 | -79 |
| 1979-09-29 | @ SFN | 160 | L 5-6 | 67-93 | 5 | 4,721 | Juan Eichelberger | Bob Knepper | Tom Griffin | Bob Owchinko | Gary Lavelle | 598 | 678 | -80 |
| 1979-09-30 | @ SFN | 161 | W 5-3 | 68-93 | 5 | 19,340 | Bob Shirley | Ed Halicki | Bob Owchinko | Gary Lavelle | Mark Lee | 603 | 681 | -78 |