Nationals Roster & Staff
Transactions
| Date | Transaction |
| 08/30/25 | Washington Nationals placed LHP MacKenzie Gore on the 15-day injured list retroactive to August 27, 2025. Left shoulder inflammation. |
| 08/30/25 | Washington Nationals recalled RHP Mason Thompson from Rochester Red Wings. |
| 08/29/25 | Washington Nationals placed C Drew Millas on the 10-day injured list retroactive to August 28, 2025. Left second finger fracture and dislocation. |
| 08/29/25 | Washington Nationals selected the contract of C C.J. Stubbs from Rochester Red Wings. |
| 08/19/25 | Washington Nationals recalled 1B Andrés Chaparro from Rochester Red Wings. |
| 08/18/25 | Washington Nationals optioned 3B José Tena to Rochester Red Wings. |
| 08/17/25 | Washington Nationals claimed RHP Julian Fernández off waivers from Los Angeles Dodgers. |
| 08/17/25 | Washington Nationals optioned RHP Julian Fernández to Rochester Red Wings. |
| 08/16/25 | Washington Nationals released 1B Nathaniel Lowe. |
| 08/14/25 | Washington Nationals designated 1B Nathaniel Lowe for assignment. |
| 08/14/25 | Washington Nationals activated RF Dylan Crews from the 60-day injured list. |
| 08/06/25 | Washington Nationals recalled RHP Cade Cavalli from Rochester Red Wings. |
| 08/06/25 | Washington Nationals optioned RHP Andry Lara to Rochester Red Wings. |
| 08/05/25 | Washington Nationals activated LHP PJ Poulin. |
| 08/05/25 | Washington Nationals optioned RHP Ryan Loutos to Rochester Red Wings. |
| 08/05/25 | Washington Nationals optioned RHP Zach Brzykcy to Rochester Red Wings. |
| 08/05/25 | Washington Nationals recalled RHP Clayton Beeter from Rochester Red Wings. |
| 08/03/25 | Washington Nationals claimed LHP PJ Poulin off waivers from Detroit Tigers. |
| 08/02/25 | Washington Nationals signed free agent RHP Carson Fischer to a minor league contract. |
| 08/01/25 | Washington Nationals recalled RHP Orlando Ribalta from Rochester Red Wings. |
| 08/01/25 | Washington Nationals recalled CF Robert Hassell III from Rochester Red Wings. |
| 08/01/25 | Washington Nationals recalled LHP Shinnosuke Ogasawara from Rochester Red Wings. |
| 08/01/25 | Washington Nationals recalled RHP Ryan Loutos from Rochester Red Wings. |