Nationals Avoid Arbitration with Reliever Mason Thompson

The Washington Nationals have successfully avoided arbitration with reliever Mason Thompson, as announced by the team. While the exact terms of the agreement have not been disclosed, MLBTR contributor Matt Swartz projected an $800K salary for Thompson, which is slightly above the league minimum of $760K.

Thompson, who will turn 27 in February, faced a challenging 2024 season as he underwent Tommy John surgery early in Spring Training. This surgery sidelined him for the entire season, but there is optimism that he could make his return relatively early in the 2025 season.

A former draftee of the San Diego Padres, Thompson joined the Nationals at the 2021 trade deadline in a deal that sent veteran reliever Daniel Hudson to San Diego. Over his tenure with Washington, Thompson made 102 appearances from 2021 to 2023, posting a 4.57 ERA with a 17.8% strikeout rate.

This agreement marks the first of Thompson’s three arbitration-eligible seasons. Before this deal, Washington's arbitration class included nine players. However, with the recent waiver of Ildemaro Vargas, that number has decreased. Potential non-tender candidates include catcher Riley Adams and relievers Derek Law and Tanner Rainey, with decisions expected before tomorrow evening’s deadline.

​As Thompson works towards his comeback, the Nationals will be hoping he can return to form and contribute to their bullpen in the upcoming season. Stay tuned for more updates on the Nationals' roster moves and Thompson's rehabilitation progress as we approach the new season.