| CBA Marucci Underclass | 45 | Andres Alvarez | 2017 | South Hills | West Covina | CA | USA | RHP |
| Southern California Bombers Underclass | 26 | Jorge Arellano | 2017 | Downey | Cudahy | CA | USA | LHP |
| CBA Marucci Underclass | 6 | Kyler Arenado | 2017 | Edison | Huntington Beach | CA | USA | SS |
| NorCal Baseball Underclass | 21 | Cody Bolton | 2017 | Tracy | Tracy | CA | USA | RHP |
| Saddleback Cowboys | 8 | Jeffrey Bruyntjens | 2018 | Laguna Beach | Laguna Beach | CA | USA | SS |
| BPA DeMarini Elite Underclass | 22 | Chad Burchit | 2017 | Tesoro | Las Flores | CA | USA | RHP |
| Southern California Bombers Underclass | 2 | Daniel Cervantes | 2017 | William S. Hart | Santa Clarita | CA | USA | 2B |
| Lamorinda Titans Underclass | 20 | Brandon Chalk | 2019 | Vacaville | Vacaville | CA | USA | RHP |
| Trombly Baseball Underclass | 98 | Eric Chavarria | 2017 | Mayfair | Lakewood | CA | USA | RHP |
| NorCal Baseball Underclass | 12 | Garrett Cichella | 2017 | Tracy | Tracy | CA | USA | SS |
| NorCal Baseball Underclass | 17 | Chris Daniels | 2017 | Granite Bay | Rescue | CA | USA | LHP |
| SGV Arsenal Underclass | 6 | Jacob Dominguez | 2017 | South Hills | West Covina | CA | USA | SS |
| EJ Sports Warriors Underclass | 45 | Jackson Ertz | 2018 | Monte Vista | Danville | CA | USA | RHP |
| Lamorinda Titans Underclass | 8 | Javier Felix | 2019 | Santa Cruz | Watsonville | CA | USA | RHP |
| NorCal Baseball Underclass | 27 | Louis Gaitley | 2017 | St. Ignatius College Prep | San Francisco | CA | USA | SS |
| SGV Arsenal Underclass | 1 | Jacob Garcia | 2017 | Walnut | Walnut | CA | USA | OF |
| CCB Elite Underclass | 56 | Aidan Goicovich | 2017 | Archbishop Mitty | Gilroy | CA | USA | RHP |
| EJ Sports Warriors Underclass | 4 | Carson Griffey | 2019 | San Ramon Valley | Danville | CA | USA | SS |
| So Cal Elite | 34 | Joel Haro | 2017 | Summit | Fontana | CA | USA | SS |
| Southern California Bombers Underclass | 11 | Kenji Henderson | 2017 | Bonita | La Verne | CA | USA | OF |
| Trombly Baseball Underclass | 99 | Shane Huey | 2017 | Valencia | Valencia | CA | USA | C |
| Trombly Baseball Underclass | 65 | Garrett Irvin | 2017 | Norco | Corona | CA | USA | LHP |
| NorCal Baseball Underclass | 10 | Zachary Jedlowski | 2017 | Sheldon | Sacramento | CA | USA | LHP |
| GBG Marucci Underclass | 6 | Adam Kerner | 2017 | Oaks Christian | Agoura Hills | CA | USA | C |
| Lamorinda Titans Underclass | 3 | Jack Kirvin | 2018 | Bishop Gorman | Las Vegas | NV | USA | RHP |
| CBA Marucci Underclass | 35 | Johnny Kuhn Jr | 2017 | St John Bosco | Lakewood | CA | USA | RHP |
| CBA Marucci Underclass | 22 | Kyle Marino | 2017 | Alta Loma | Alta Loma | CA | USA | RHP |
| Phenom Signature Underclass | 45 | Ricky Martinez | 2018 | St. Francis | Morgan Hill | CA | USA | SS |
| Trombly Baseball Underclass | 35 | Augie Mattei | 2017 | El Dorado | Yorba Linda | CA | USA | OF |
| Phenom Signature Underclass | 17 | Jake McLean | 2018 | Coronado | Henderson | NV | USA | OF |
| GBG Marucci Underclass | 17 | Dante Mendoza | 2017 | Torrance | Torrance | CA | USA | RHP |
| CBA Marucci Underclass | 10 | Nicholas Morales | 2017 | St John Bosco | Bellflower | CA | USA | RHP |
| Lamorinda Titans Underclass | 22 | Alejandro Murillo | 2018 | Stockdale | Bakersfield | CA | USA | RHP |
| Phenom Signature Underclass | 3 | Nick O’Day | 2018 | Bishop Shanahan | Coatesville | PA | USA | OF |
| CBA Marucci Underclass | 31 | Jamal O'Guinn | 2017 | Buchanan | Fresno | CA | USA | SS |
| BPA DeMarini Elite Underclass | 8 | Jack Owen | 2017 | J Serra | Coto De Caza | CA | USA | LHP |
| CBA Marucci Underclass | 2 | Kenny Oyama | 2017 | El Toro | El Segundo | CA | USA | OF |
| North Coast Reds Underclass | 52 | Ethan Payne | 2017 | Benicia | Benicia | CA | USA | C |
| Southern California Bombers Underclass | 6 | Zach Pettway | 2017 | Long Beach Wilson | Long Beach | CA | USA | RHP |
| So Cal Elite | 17 | Zachary Ribera | 2017 | Alta Loma | Ontario | CA | USA | LHP |
| CBA Marucci Underclass | 39 | Daniel Ritcheson | 2017 | Bishop Alemany | Northridge | CA | USA | RHP |
| SGV Arsenal Underclass | 22 | Matthew A. Rodriguez | 2017 | Glen A. Wilson | La Puente | CA | USA | RHP |
| So Cal Elite | 11 | Jake Rogers | 2017 | Centennial | Las Vegas | NV | USA | RHP |
| CBA Marucci Underclass | 14 | Sean Ross | 2017 | Granite Hills | El Cajon | CA | USA | OF |
| GBG Marucci Underclass | 10 | Carson Rudd | 2017 | Oaks Christian | Agoura | CA | USA | RHP |
| Team California Warriors Underclass | 22 | Michael Sandoval | 2017 | Eleanor Roosevelt | Eastvale | CA | USA | MIF |
| So Cal Elite | 10 | Johnnie Santos | 2018 | Fontana A. B. Miller | Fontana | CA | USA | 2B |
| CBA Marucci Underclass | 29 | Matthew Sauer | 2017 | Ernest Righetti | Santa Maria | CA | USA | RHP |
| CCB Elite Underclass | 4 | Hunter Schilperoort | 2017 | Westmont | Campbell | CA | USA | LHP |
| North Coast Reds Underclass | 49 | Quentin Selma | 2017 | Buchanan | Clovis | CA | USA | 3B |
| SGV Arsenal Underclass | 43 | Casey Slattery | 2017 | Harvard-Westlake | Los Angeles | CA | USA | 1B |
| NorCal Baseball Underclass | 32 | Tate Soderstrom | 2017 | Turlock | Turlock | CA | USA | OF |
| Saddleback Cowboys | 9 | Brandon Stewart | 2018 | Arlington | Riverside | CA | USA | OF |
| CCB Elite Underclass | 7 | RJ Teijeiro | 2017 | St Francis | Foster City | CA | USA | C |
| CCB Elite Underclass | 62 | Christopher Troye | 2017 | Heritage | Brentwood | CA | USA | RHP |
| NorCal Baseball Underclass | 2 | Easton Waterman | 2017 | Enterprise | Redding | CA | USA | C |
| BPA DeMarini Elite Underclass | 36 | Reece Weinberg | 2017 | Chaminade College Preparatory | Woodland Hills | CA | USA | LHP |
| Phenom Signature Underclass | 57 | Patrick Wicklander | 2018 | Valley Christian Schools | San Jose | CA | USA | LHP |
| CBA Marucci Underclass | 23 | Donta Williams | 2017 | Legacy | Las Vegas | NV | USA | OF |
| CCB Elite Underclass | 38 | Drew Williams | 2017 | San Benito | Hollister | CA | USA | SS |
| BPA DeMarini Elite Underclass | 5 | Trevor Windisch | 2017 | Huntington Beach | Huntington Beach | CA | USA | SS |