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|
| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jackson, Daniel | RF | Baltimore (WIN) Orioles | 23 | 05/31/2025 | Laurens | USA | Right | Right | 6' 4" | 205 lbs | - |
| Jackson, Graham | SP | Boston (WIN) Red Sox | 23 | 08/06/2025 | Toronto | CAN | Switch | Right | 6' 2" | 195 lbs | $675,000 |
| Jarvis, Ian | C | Arizona (WIN) Diamondbacks | 34 | 11/09/2014 | Maywood | USA | Left | Right | 5' 10" | 195 lbs | - |
| Jennings, Jonas | RP | Chicago (WIN) White Sox | 21 | 01/09/2027 | Cudjoe Key | USA | Left | Left | 6' 9" | 205 lbs | - |
| Jiang, Teh-huai | C | Philadelphia (WIN) Phillies | 17 | 06/23/2031 | Changhwa | TPE | Right | Right | 6' 6" | 210 lbs | - |
| Jimenez, Jose | RF | St. Louis (WIN) Cardinals | 25 | 11/18/2023 | San Juan | PUR | Right | Left | 6' 6" | 200 lbs | - |
| Jimenez, Willie | SP | Minnesota (WIN) Twins | 23 | 12/11/2025 | Ranchuelo | CUB | Right | Left | 6' 2" | 200 lbs | - |
| Joe, Yeong-hun | SS | San Francisco (WIN) Giants | 27 | 01/22/2021 | Pyongyang | PRK | Left | Right | 6' 1" | 200 lbs | - |
| Joe, Zhao-ying | SP | New York (WIN) Mets | 23 | 11/06/2025 | Hsinchuang | TPE | Right | Right | 6' 1" | 175 lbs | - |
| Johansen, Ron | 1B | Chicago (WIN) White Sox | 27 | 07/14/2021 | Memphis | USA | Right | Right | 6' 1" | 185 lbs | - |
| John Bovi, Bon | SP | Los Angeles (WIN) Dodgers | 18 | 04/30/2030 | Hagaman | USA | Right | Right | 6' 6" | 200 lbs | - |
| Johnson, Matt | SP | Cincinnati (WIN) Reds | 24 | 03/01/2024 | South San Francisco | USA | Right | Right | 6' 0" | 180 lbs | $675,000 |
| Johnston, Jamie | RP | Seattle (WIN) Mariners | 26 | 10/14/2022 | Tuolumne City | USA | Switch | Right | 6' 1" | 190 lbs | - |
| Jones, Bobby | RP | Detroit (WIN) Tigers | 26 | 05/01/2022 | Des Moines | USA | Left | Left | 6' 1" | 195 lbs | $675,000 |
| Jones, Cory | SP | Washington (WIN) Nationals | 24 | 02/16/2024 | Maryland Heights | USA | Right | Right | 6' 2" | 190 lbs | $675,000 |
| Jones, Darnell | SS | Texas (WIN) Rangers | 34 | 06/22/2014 | Sanford | USA | Right | Right | 6' 2" | 200 lbs | - |
| Jones, Josh | 1B | New York (WIN) Mets | 23 | 08/07/2025 | Brooklyn | USA | Right | Right | 6' 1" | 185 lbs | $675,000 |
| Jones, McGwire | 3B | St. Louis (WIN) Cardinals | 21 | 12/06/2027 | St. Louis | USA | Right | Right | 6' 6" | 205 lbs | - |
| Jones, Ryan | RP | Texas (WIN) Rangers | 38 | 11/12/2010 | Allentown | USA | Right | Right | 6' 4" | 195 lbs | - |
| Jones, Steve | C | Baltimore (WIN) Orioles | 24 | 11/08/2024 | Port Orange | USA | Right | Right | 6' 1" | 200 lbs | - |
| Jones, Steve | SS | San Francisco (WIN) Giants | 26 | 10/05/2022 | Dedham | USA | Right | Right | 6' 2" | 200 lbs | - |
| Juarez, Alex | 3B | Cincinnati (WIN) Reds | 19 | 01/15/2029 | Monte Cristi | DOM | Right | Right | 6' 0" | 175 lbs | - |
| Juarez, Manuel | C | Minnesota (WIN) Twins | 25 | 03/18/2023 | South Amherst | USA | Right | Right | 6' 1" | 200 lbs | $675,000 |
| Julien, Chris | SP | Seattle (WIN) Mariners | 25 | 04/28/2023 | Youngstown | USA | Right | Right | 6' 2" | 195 lbs | - |
