| Mark Guadagnini | OF | 2005-2007 | Navy |
| Mike Guadagnini | IF | 2008-2013 | Navy, Cal State San Marcos |
| Alex Guajardo | P | 2004-2007 | Texas-Pan American, Texas-Brownsville and Texas Southmost College |
| Trey Guajardo | OF | 2020-2020 | Texas-Pan American |
| Kameron Guangorena | C | 2019-2020 | Cal State Fullerton |
| Joseph Guaragna | OF | 2014-2015 | Old Dominion |
| Jonathan Guardado | P | 2018-2019 | Arizona |
| Franco Guardascione | C | 2014-2018 | Jacksonville, Palm Beach State College |
| Marvcus Guarin | UT | 2020-2020 | Seattle |
| Wayne Guarino | OF | 2004-2007 | Saint Peter's |
| Joe Guarnaccia | OF | 2009-2010 | Florida Gulf Coast |
| Camden Guarnere | --- | 2020-2020 | Texas Southern |
| David Guarno | OF | 2012-2013 | Ark-Little Rock |
| Gavin Guarrera | P | 2012-2013 | North Carolina Central, Monroe CC |
| Darnell Guary | OF | 2005-2005 | Sacramento State |
| Peter Guastella | IF | 2004-2007 | Florida A&M |
| Brett Guba | IF | 2015-2016 | Elon |
| Wade Gubbels | IF | 2007-2007 | New Mexico State, Barton County CC |
| Justin Gubser | C | 2013-2016 | Purdue, Canada College |
| Ryan Guckin | C | 2017-2020 | La Salle |
| Kevin Gude | P | 2013-2013 | Bethune-Cookman, Polk State |
| Tony Gudino | C | 2015-2018 | UC Riverside |
| Andrew Gudmunson | IF | 2007-2010 | North Dakota |
| Wes Guenther | C | 2007-2012 | Brigham Young |
| Andrew Guerci | IF | 2018-2018 | Belmont |
| Jake Guercio | OF | 2019-2020 | Fordham |
| Joseph Guercio | P-OF | 2014-2016 | Stony Brook |
| Chris Guerin | OF | 2009-2010 | Holy Cross |
| Gabe Guerino | IF | 2009-2012 | Quinnipiac, Notre Dame |
| Alex Guerra | IF | 2010-2011 | Radford, Greensboro College |
| Andrew Guerra | IF | 2008-2010 | Saint Louis, Rice |
| Drew Guerra | OF | 2018-2018 | SUNY - Albany, Rockland CC |
| Jason Guerra | P | 2002-2004 | UNLV |
| Jesus Guerra | P | 2004-2006 | Texas Southern |
| Josh Guerra | OF | 2012-2015 | Long Beach State, Cal State Los Angeles |
| Michael Guerra | IF | 2011-2012 | Texas-Arlington, Blinn College |
| Rene Guerra | P | 2006-2009 | Manhattan College, Miami |
| Ryan Guerra | P | 2014-2017 | Miami, Broward College |
| Steven Guerra | P | 2005-2006 | Oklahoma, Cuesta College |
| Justin Guerrera | IF | 2019-2020 | Fairfield |
| Brett Guerrero | P | 2005-2006 | Utah Valley U, Mt. San Jacinto College |
| Fernando Guerrero | P | 2015-2016 | Marshall |
| Gabe Guerrero | RF-OF | 2009-2009 | St. John's |
| Geremy Guerrero | P | 2017-2020 | Indiana State |
| Julio Guerrero | OF | 2002-2002 | New Mexico, El Paso CC, New Mexico JC |
| Leonard Guerrero | OF | 2004-2005 | Louisiana-Lafayette |
| Michael Guerrero | P | 2016-2020 | Marshall, Crowder |
| Nino Guerrero | OF | 2009-2010 | UW Milwaukee, Moraine Valley CC |
| Noe Guerrero | P | 2019-2020 | Texas Southern |
| Rafael Guerrero | P | 2012-2015 | Long Island-Brooklyn |
| Rickey Guerrero | UT | 2010-2014 | Pacific, Cal State Monterey Bay, San Joaquin Delta College |
| Ruben Guerrero | P | 2004-2005 | Florida A&M, North Florida CC |
| Tyson Guerrero | OF-P | 2019-2019 | Washington State |
| Greg Guers | OF | 2012-2016 | USC-Upstate, Penn State |
| J Guess | P | 2004-2004 | Miss. Valley St |
| Casey Guest | IF | 2006-2007 | Texas State, Grayson County College |
| Greg Guest | IF | 2013-2013 | Murray State, Rend Lake College |
| Mark Guest | P | 2008-2011 | Oklahoma, South Mountain CC, Oral Roberts |
| Shelby Guest | C-OF | 2004-2004 | Southern Utah |
| Steffan Guest | C | 2008-2010 | Texas-Arlington, McLennan CC |
| Brock Guetzke | P | 2010-2013 | Central Michigan, UW Oshkosh |
| Chris Guetzlaff | OF | 1999-2002 | Minnesota |
| Brock Guffey | P | 2018-2020 | Alabama |
| Daniel Guffey | OF | 2007-2009 | Ark-Little Rock, Lyon College |
| Pierrie Guffie | H | 2004-2007 | Texas Southern |
| Milton Guggia | 2B | 1972-1972 | USC |
| Tom Guglielmello | P | 2017-2020 | North Carolina Central, Pasco-Hernando CC |
| Mike Guglielmo | P | 2010-2012 | Sacramento State, Diablo Valley, Sonoma State |
| Quintin Guice | OF | 2017-2017 | Grambling State |
| Gus Guida | P-3B | 2005-2008 | Villanova |
| Jonathan Guida | IF | 2011-2014 | Monmouth |
| Troy Guidone | H | 2002-2002 | Fordham |
| Ben Guidos | P | 2008-2011 | Washington |
| Jason Guidos | 2B | 1999-2002 | Navy |
| Lance Guidroz | P | 2007-2009 | Nicholls State |
| Lukas Guidroz | P | 2002-2002 | LSU, Enterprise-Ozark |
| Dustin Guidry | H | 2008-2008 | McNeese State, LSU-Eunice |
| Hayden Guidry | P | 2015-2017 | McNeese State, LSU-Eunice |
| Justin Guidry | OF-P | 2009-2012 | Middle Tenn State |
| Matthew Guidry | 2B | 2017-2020 | Southern Miss |
| Tim Guidry | IF | 2003-2007 | Tulane |
| Weylin Guidry | P | 2000-2002 | LSU |
| John Guienze | P | 2017-2019 | Southern |
| Justin Guilbeau | IF | 2001-2002 | New Orleans, Bossier Parish CC, Louisiana Tech |
| Lewis Guilbeau | OF | 2013-2016 | Texas State, Alvin CC, McNeese State |
| Ricky Guile | IF | 2012-2015 | UNC-Greensboro |
| Tyler Guilfoil | P | 2019-2020 | Lipscomb |
| Brandon Guilford | SS | 2015-2015 | Texas A&M-Corpus Christi |
| Jimmy Guiliano | OF | 2012-2015 | Iona College |
| Chris Guillemette | OF | 2008-2010 | Northeastern |
| Arthur Guillen | OF | 2001-2003 | Hawaii, Porterville College |
| Eric Guillen | IF | 2008-2009 | USC-Upstate |
| James Guillen | P | 2011-2014 | USC |
| Brian Guillory | P | 2005-2010 | Texas Southern |
| Charles Guillory | --- | 2014-2017 | Texas Southern, Seminole State College |
| Dillon Guillory | C-1B | 2008-2010 | Louisiana-Lafayette |
| Grant Guillory | IF | 2016-2019 | Pennsylvania |
| Wayne Guillory | P | 2004-2007 | Texas Southern |
| Ricky Guillot | P | 2003-2004 | Louisiana Tech |
| Mitch Guilmette | IF-OF | 2015-2018 | Central Ct State |
| Nick Guimbarda | OF-IF | 2016-2019 | Presbyterian College |
| Patrick Guinane | 3B | 2011-2014 | Butler |
| Adam Guinn | IF | 2011-2013 | Siena College, Walters State CC, Tusculum College |
| Chris Guinn | 3B-P | 2011-2014 | Gallaudet |
| Parker Guinn | C | 2012-2015 | Washington, SIU-Edwardsville |
| Sean Guite | IF | 2013-2014 | UNC-Greensboro, Irvine Valley College |
| Mike Gula | 3B | 1999-2002 | Richmond |
| Brady Gulakowski | C-1B | 2018-2020 | NC State, Polk State, Liberty |
| David Gulati | OF | 2015-2018 | Villanova |
| Michael Guldberg | IF-OF | 2018-2020 | Georgia Tech |
| Jimmy Gulden | P | 2002-2005 | Virginia Tech, Cleveland State |
| Joe Gulden | P | 2005-2005 | Cal Poly, Cuesta College |
| Wade Gulden | IF | 2015-2018 | Utah |
| Drew Guldin | P | 2020-2020 | Massachusetts-Lowell |
| Mike Gulker | UT | 2002-2005 | Yale |
| Michael Gulledge | P | 2002-2003 | UNC-Greensboro |
| Rhett Gulledge | P | 2003-2004 | McNeese State, New Mexico |
| Cole Gullette | IF | 2016-2017 | Miss. Valley St, East Mississippi CC |
| Craig Gullickson | P | 2008-2011 | Clemson, Georgia |
| Justin Gullickson | IF | 2011-2013 | Gardner-Webb |
| Joe Gullion | SS | 2003-2004 | Nebraska, Johnson County CC, Central Missouri |
| Ben Gullo | P | 2012-2015 | Eastern Kentucky |
| Michael Gultz | P | 2001-2004 | Texas State |
| Brandon Gum | SS | 2013-2017 | George Mason, Maryland |
| Griffin Gum | OF | 2013-2016 | Alabama-Birmingham |
| Jeremy Gum | C | 2009-2011 | West Virginia |
| Nik Gumeson | IF | 2008-2010 | Lamar, Utah, College of Southern Idaho |
| Kyle Gumieny | P | 2009-2010 | SE Missouri State, Lamar CC |
| Jason Gumnitz | OF | 2001-2002 | Hofstra |
| Adam Gumpf | P | 2004-2007 | Bowling Green State |
| Tyler Gums | P | 2017-2020 | Long Beach State, Sierra College |
| Doug Gunderson | P | 2006-2006 | Arkansas State, Johnson County CC |
| Grant Gunderson | P | 2017-2019 | St. Thomas (MN) |
| Nuri Gunes | C | 2011-2014 | Saint Joseph's, Concordia College |
| Matt Gunesch | P | 2001-2003 | St. Bonaventure, Connecticut |
| Adam Gunn | P | 2012-2013 | Utah Valley U, Salt Lake CC |
| Ben Gunn | P | 2004-2005 | Southern Utah |
| Joe Gunn | OF | 2017-2020 | Ball State, St. Johns River CC, Penn State |
| Justin Gunn | IF-P | 2009-2013 | Washington |
| Scott Gunn | OF | 2005-2007 | Akron |
| Harry Gunner | P | 2007-2007 | Texas Southern |
| Grant Gunning | P | 2012-2016 | Seattle |
| Mark Gunst | P | 2013-2016 | James Madison |
| Calvin Gunter | P | 2008-2012 | Toledo, Purdue |
| Corey Gunter | P | 2005-2006 | Austin Peay, Wabash Valley College |
| Jeff Gunter | P | 2011-2015 | Butler, Oral Roberts, Oklahoma Baptist |
| Rye Gunter | P | 2019-2020 | LSU |
| Ty Gunter | IF | 2014-2017 | Ark-Little Rock, Northeastern Oklahoma A&M College |
| Brandon Gupton | IF | 2003-2003 | Western Kentucky |
| David Gurbach | P | 2008-2009 | Indiana State, Cerritos College |
| Delfino Gurerra | SS-2B | 2004-2004 | Prairie View A&M |
| Michael Gurka | P | 2020-2020 | Minnesota |
| Nick Gurka | IF | 2016-2016 | Prairie View A&M |
| Josh Gurnack | C | 2018-2020 | SUNY - Albany |
| Kyle Gurney | C-IF | 2020-2020 | Bowling Green State |
| Connor Gurnik | IF | 2019-2020 | Cal Poly |
| Brian Gursky | P | 2018-2020 | USC |
| Chance Gusbeth | IF-P | 2013-2016 | Cal State Bakersfield |
| John Gusich | IF | 2000-2002 | Arizona State, Purdue |
| Derek Gussaroff | P | 2010-2013 | Lafayette College |
| Scott Gussaroff | P | 2008-2011 | Fairfield |
| Giovanni Gussen | OF | 2014-2014 | Rider |
| Austin Gussman | P | 2017-2017 | Texas-Pan American, Akron |
| Brandon Gust | IF | 2013-2014 | Utah Valley U, Salt Lake CC |
| Cam Gust | IF | 2015-2017 | Utah, Dixie State College |
| Easton Gust | 2B | 2009-2009 | San Diego State, Southern Nevada |
| David Gustafson | OF | 2007-2010 | Northeastern |
| David Gustafson | P | 2015-2018 | Southern Nazarene, Contra Costa College |
| Shane Gustafson | P | 2017-2020 | Nevada, Folsom Lake |
| Jason Gustavson | P | 2008-2008 | Columbia, Santa Rosa Junior College |
| Jake Gustin | IF | 2019-2020 | Bryant University |
| Sean Gustin | P | 2013-2016 | Holy Cross |
| Danny Gutcher | C-OF | 2020-2020 | South Florida |
| Alex Gutermuth | P | 2017-2018 | Southern Illinois |
| Jeff Guthridge | P | 2008-2011 | Hofstra |
| Brandon Guthrie | P | 2005-2005 | Prairie View A&M |
| Kevin Guthrie | P-IF | 2013-2016 | Brown |
| Phillip Guthrie | P | 2006-2010 | Alabama A&M |
| Steve Guthrie | 3B | 2002-2003 | UC Irvine, Palomar College |
| Aaron Gutierrez | P | 2015-2015 | UC Davis |
| Alizaeh Gutierrez | P | 2020-2020 | New Mexico State |
| Brent Gutierrez | OF | 1999-1999 | San Jose State |
| Dan Gutierrez | IF | 2018-2020 | Chicago State, Triton College |
| Dante Gutierrez | C | 2017-2018 | San Diego, St. Edward's |
| Erik Gutierrez | P | 2017-2019 | Lipscomb, Los Angeles Harbor College |
| Hector Gutierrez | IF | 2014-2018 | Michigan |
| Isaak Gutierrez | IF-P | 2017-2020 | Bethune-Cookman |
| Joe Gutierrez | UT | 2000-2008 | Texas-Pan American |
| Jonathan Gutierrez | P | 2006-2006 | Texas-Arlington |
| Jonathan Gutierrez | P | 2008-2009 | Stephen F. Austin, Galveston College |
| Jorge Gutierrez | IF-C | 2017-2019 | Texas A&M, Alvin CC, Lamar |
| Rick Gutierrez | 2B | 1993-1994 | Oklahoma |
| Robert Gutierrez | P-OF | 2016-2018 | Chicago State, Olney Central College |
| Samuel Gutierrez | IF | 2017-2018 | Incarnate Word |
| Shea Gutierrez | IF | 2018-2020 | Incarnate Word, Texas-San Antonio |
| Sly Gutierrez | IF | 2002-2005 | Manhattan College |
| Sylvester Gutierrez | IF | 2002-2002 | Manhattan College |
| Vince Gutierrez | IF | 2006-2007 | NC State, Siena College, Canada College |
| Jason Gutknecht | P | 2001-2002 | Fresno State |
| Luke Gutos | IF | 2019-2019 | Massachusetts, Cumberland County College |
| Jimmy Gutowski | P | 2013-2015 | Eckerd College, Monroe CC |
| Chris Gutschenritter | P | 2010-2010 | Miami |
| Alex Guttosch | P | 2005-2009 | Eastern Illinois |
| Brandon Gutzler | OF | 2014-2018 | Murray State, St. Louis CC-Meramec |
| Andy Guy | P | 2004-2006 | USC |
| Cobey Guy | P | 2009-2010 | Wichita State, Arkansas-Fort Smith |
| David Guy | IF | 2002-2002 | San Jose State, Mission College |
| Jaylen Guy | OF-IF | 2019-2020 | Liberty |
| Justin Guy | P | 2002-2004 | New Orleans, Bossier Parish CC |
| Mike Guy | C | 2008-2009 | Maryland-Eastern Shore, Salem CC |
| Pete Guy | C | 2013-2016 | UNC Asheville, Louisburg College |
| Wils Guy | --- | 2020-2020 | Cornell |
| Zephan Guyear | IF | 2010-2013 | Tennessee Tech |
| Lance Guyer | OF | 2000-2003 | Iowa |
| Lath Guyer | P | 2005-2010 | Mercer |
| Noah Guyette | IF | 2020-2020 | Air Force |
| Max Guyll | C | 2004-2004 | Indiana U.-Purdue U.-FW |
| Brian Guymon | OF | 2011-2013 | Stanford |
| Cody Guymon | C | 2006-2011 | St. Mary's (CA), Utah |
| Jon Guyre | OF | 2003-2006 | Saint Louis |
| B.J. Guyse | IF | 2003-2005 | Chicago State |
| Jack Guzek | P | 2019-2020 | Indiana State, Gulf Coast CC, Iowa |
| Bryan Guzman | P | 2019-2020 | Saint Peter's |
| Concepcion Guzman | P | 2006-2009 | Bethune-Cookman |
| Esteban Guzman | P | 2009-2012 | San Jose State |
| Jacknell Guzman | --- | 2020-2020 | Alabama State, Monroe CC |
| Jonny Guzman | P | 2020-2020 | San Diego State |
| Jose Guzman | SS-2B | 2004-2005 | Northern Iowa, East Los Angeles College |
| Matt Guzman | SS | 2007-2007 | Texas-Pan American, Texas-San Antonio |
| Wilton Guzman | UT | 2012-2014 | Arkansas-Pine Bluff |
| Austin Guzzo | C-3B | 2015-2018 | Iowa |
| 231 record(s) |