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|
| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jackson, Dean | DH | Montana Pandas | 28 | 03/01/2014 | Charleston | USA | Left | Left | 6' 0" | 220 lbs | $937,500 |
| Jacobson, Mark | RP | Las Vegas Flamingos | 29 | 04/21/2013 | Omaha | USA | Right | Left | 6' 1" | 215 lbs | $280,000 |
| James, Kenny | RP | Pittsburgh Kingfishers | 28 | 06/29/2014 | Aurora | USA | Left | Left | 6' 4" | 205 lbs | $280,000 |
| Jang-Yop, An | SP | Toledo Stingers | 37 | 11/17/2005 | Unknown | KOR | Left | Left | 6' 1" | 210 lbs | $2,500,000 |
| Japón, Cornelio | RF | Free Agent | 28 | 07/06/2014 | Daniel Flores | CRC | Right | Left | 6' 0" | 170 lbs | - |
| Jesus, Gastão | SP | Echo Park Lakers | 17 | 08/26/2025 | Matelândia | BRA | Switch | Right | 6' 8" | 205 lbs | - |
| Jia, Tak-wai | C | Oakland Oaks | 28 | 08/30/2014 | Hsinchu | TPE | Right | Right | 6' 4" | 230 lbs | $280,000 |
| Jiménez, Alberto | SP | Toledo Stingers | 18 | 04/18/2024 | Moyobamba | PER | Right | Right | 6' 1" | 175 lbs | - |
| Jolly, Dylan | SP | Athletic Club KC | 17 | 11/18/2025 | Adelaide | AUS | Left | Left | 6' 4" | 180 lbs | - |
| Jones, Johnny | SP | Vancouver Grey Wolves | 25 | 08/16/2017 | Houston | USA | Right | Right | 6' 0" | 205 lbs | $280,000 |
| Jones, Johnny | C | Oakland Oaks | 25 | 07/12/2017 | Glenn Dale | USA | Right | Right | 5' 10" | 195 lbs | $280,000 |
| Jones, Sean | RP | Las Vegas Flamingos | 26 | 01/02/2016 | Hammond | USA | Right | Right | 5' 10" | 190 lbs | $280,000 |
| Joseon, Gojong | RP | Vancouver Grey Wolves | 34 | 10/02/2008 | Daegu | KOR | Right | Right | 6' 0" | 210 lbs | $575,000 |
