| Player | Team | BB |
|---|---|---|
| Freddie Freeman | Foscoe | 138 |
| Juan Soto | Brooklyn | 120 |
| Christian Yelich | Arizona | 114 |
| Ronald Acuna | Fraser | 111 |
| Jose Ramirez | Foscoe | 104 |
| Aaron Hicks | Southland | 99 |
| Mike Yastrzemski | Colorado | 93 |
| Jesse Winker | Fraser | 87 |
| Brandon Nimmo | Brooklyn | 86 |
| Anthony Rizzo | Colorado | 83 |
| Trent Grisham | Montana | 81 |
| Mike Tauchman | Colorado | 81 |
| Ian Happ | Chicago | 78 |
| Michael Conforto | Southland | 70 |
| Kyle Schwarber | Chicago | 68 |
| Trevor Story | Montana | 68 |
| Aristides Aquino | Tacoma | 68 |
| Matt Carpenter | Tacoma | 66 |
| Eugenio Suarez | Arizona | 66 |
| Mookie Betts | Kansas City | 66 |