Trevor Williams signed a two-year/$13M deal with the Washington Nationals after a season and a half in New York and a 2022 campaign in which he made nine starts and 30 appearances overall for the Mets, putting up a 3.21 ERA, a 3.88 FIP, 23 walks, 84 strikeouts, and a .253/.307/.413 line against over 89 2⁄3 innings pitched, mostly in relief (51 IP).
Williams was back and forth between the bullpen and rotation during his time with in NY, with a total of 53 appearances and 24 starts in 2021-22.