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| Player | High School | State | Position | College Commitment |
| Cole Abbott | Weber | UT | RHP | BYU |
| Daniel Abdalla | Kent Island | MD | LHP | Chesapeke College |
| Chaz Abeln | Sebring | FL | RHP | Florida International |
| AJ Achter | Clay | OH | RHP | Michigan State |
| Tyler Acker | Donelson Christian | TN | C | Middle Tennessee State |
| Ryan Acosta | Clearwater Central Catholic | FL | SS | Georgia |
| Schudi Adam | Cooper | MN | RHP | DCTC |
| Drew Adamiec | Walled Lake Central | MI | RHP | Madonna University |
| Brandon Adams | Triad | IL | C | Central Arkansas |
| Josh Adams | Eagle's View | FL | SS | Florida |
| Nick Adams | Winter Park | FL | SS | Mercer |
| Ty Adams | Brebuf Jesuit | IN | 1B | Notre Dame |
| Michael Adamson | Freeburg | IL | OF | Middle Tennesse State |
| Kyle Adkins | Las Lomas | CA | LHP | Gonzaga |
| Mark Adzick | William Penn Charter | PA | LHP | Wake Forest |
| Graeme Agate | Albany | CA | 2B | San Francisco |
| Barry Agnew | Wade Hampton | SC | OF | Virginia Tech |
| Brett Aguilar | Reagan | TX | OF | UT San Antonio |
| George Agyapong-Mensah | Our Lady of Mount Carmel | ON | OF | Western Texas |
| Mark Ahern | Homewood Flossmoor | IL | RHP | St. Francis |
| David Ahonen | Victor | NY | SS | Ithaca College |
| Kevin Ahrens | Memorial-Spring Branch | TX | SS | Texas A&M |
| Kevin Alas | Chaminade | NY | MIF | William & Mary |
| Mehdi Alavi | Batesville | IN | C | Vincennes |
| Tyler Albright | Woodrow Wilson | CA | C | Harvard |
| Daniel Alcaire | Salesian | CA | IF | Saint Mary's |
| Bobby Alcala | Liberty | CA | OF | San Diego State |
| Eric Alcantar | Venice | CA | 1B | Biola University |
| Tim Alderson | Horizon | AZ | RHP | Oregon State |
| Scott Alexander | Cardinal Newman | CA | LHP | Pepperdine |
| Chris Alfano | Southlake Carroll | TX | MIF | Texas-Dallas |
| David Alleman | The Woodlands | TX | OF | Texas A&M |
| Brad Allen | Geneva | IL | RHP | Northern Illinois |
| Cody Allen | Boone | FL | RHP | Central Florida |
| Sam Allen | Roswell | GA | RHP | Duke |
| Grant Allgire | La Costa Canyon | CA | 1B | San Diego State |
| Terrell Alliman | Bluevale C.I. | ON | OF | Southern Nevada |
| Denny Almonte | Florida Christian | FL | OF | South Florida |
| Reece Alnas | Kamehameha-Keaau | HI | OF | Palomar College |
| Nick Alosco | Mahopac | NY | SS | Wheaton College |
| Ben Alsup | Ruston | LA | RHP | Louisiana State |
| Mikel Alvarez | Palm Beach Central | FL | SS | Florida Gulf Coast |
| Ricky Alvarez | Otay Ranch | CA | 3B | SDSU |
| Isaac Alves | Bishop Hendricken | RI | 1B | Rochester Institute of Technology |
| Aaron Amaral | Edison | CA | LHP | Golden West College |
| David Ames | Deerfield | IL | RHP | Carleton College |
| Greg Amorosso | Cox | VA | LHP | Elon |
| Chris Anagnostou | LaPorte | TX | RHP | TCU |
| Michael Anarumo | MacArthur | NY | LHP | LeMoyne |
| Tyler Andersen | Jordan | UT | LHP | Utah |
| D.J. Anderson | Delbarton | NJ | 3B | Rutgers |
| Ryan Anderson | Venice | FL | LHP | Drury University |
| Steve Anderson | Bishop Fenwick | MA | RHP | Holy Cross |
| Tosh Anderson | IMG/Pendleton | SC | 3B | niversity of Rhode Island |
| Mark Andrews | Hillsborough | NJ | LHP | Bryant |
| Nick Andrews | De La Salle | CA | C | Hawaii |
| Carmen Angelini | Lake Charles Barbe | LA | SS | Rice |
| Daniel Angelo | Holy Cross | NJ | OF | St. John's |
| Gregory Annarummo | IMG | MA | 3B | Elon |
| Rogelio Aquino | Cliffside Park | NJ | RHP | Columbia University |
| Kai Archbell | Pace | FL | RHP | Alabama Southern |
| Gabriel Arcoleo | Salinas | CA | 1B | UNLV |
| Logan Arena | Nipmuc Regional | MA | C | Skidmore College |
| Matt Argyropoulos | Mark Morris | WA | RHP | Washington State |
| Kevin Arico | Hunterdon Central | NJ | RHP | Virginia |
| Jonathan Armold | Pine Crest | FL | RHP | Flagler |
| Jonathan Armold | Pine Crest | FL | RHP | Flagler |
| Bobby Armstrong | Westbrook | TX | OF | Angelina CC |
| Mickey Armstrong | The Woodlands | TX | C | Texas Tech |
| Kenny Arnerich | Alameda | CA | C | Cal State Fullerton |
| Patrick Arnold | Huntington | WV | RHP | North Carolina State |
| Anthony Arrichiello | Archbishop Stepinac | NY | C | American International College |
| Ryan Ashe | Wayne | OH | OF | Wright State |
| Bryce Aspinwall | Woodward | GA | OF | Michigan |
| Jacob Astor | Iowa City West | IA | 1B | Southern Arkansas |
| Kyle Atkinson | Colerain | OH | LHP | Bowling Green |
| Josh Attaway | Lexington | SC | 2B | USC-Aiken |
| Bret Atwood | Katy | TX | OF | Texas State |
| Michael Aviles | Suffern | NY | RHP | Concordia Col |
| Kyle Ayers | Oswego | IL | RHP | Parkland |
| Zachary Babbit | Albany | CA | 2B | San Diego State |
| Justin Baca | Sierra Vista | NV | RHP | UNLV |
| Austin Baggs | Cimarron Memorial | NV | OF | Feather River JC |
| Austin Bailey | Prattville | AL | RHP | Alabama |
| Samuel "Brock" Bailey | Lee County | GA | IF | Elon |
| Christopher Baker | Deep Creek | VA | OF | Old Dominion |
| Jonathon Baker | Carthage | TX | OF | Panola |
| Chris Balcom-Miller | | CA | RHP | West Valley College |
| Anthony Balisteri | Rockbridge County | VA | SS | Virginia Tech |
| Matt Baran | Palm Beach Gardens | FL | RHP | College of Charleston |
| TJ Bargeron | Hillcrest | SC | RHP | Western Carolina |
| Cody Barnes | Palatka | FL | RHP | Florida |
| Daniel Barnes | Manhasset | NY | RHP | Princeton |
| Marcus Barnes | Oakland | TN | LHP | Memphis |
| Nick Barnese | Simi Valley | CA | RHP | Cal State Fullerton |
| Tim Barnum | Xavier | IA | RHP | Valparaiso |
| Jonathan Barone | St Anthony's | NY | OF | Iona College |
| John Barr | Germantown | PA | OF | Virginia |
| Manuel Barreda | Sahurita | AZ | RHP | Arizona |
| Travis Barrett | Westfield | GA | RHP | Middle Georgia |
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