Oh, Will Harris, how much we have missed you. RHP Will Harris has begun an MLB Rehab Assignment with the Rochester Red Wings.

On January 3, 2020, the Washington Nationals announced they had signed Harris to a three-year guaranteed contract worth $24 million. Harris could not replicate his 2019 success with Houston in 2020 but still had a solid season with Washington, registering a 3.06 ERA with 21 strikeouts in 172⁄3 innings of work.

It was announced on May 30, 2021, that Harris would undergo surgery to address thoracic outlet syndrome, likely ending his 2021 season.[17] He was placed on the 60-day injured list on June 12.[18] In eight games for the Nationals, Harris struggled to a 9.00 ERA.

Harris has yet to pitch in the 2022 season for the Nationals.