Mitchell Parker has regressed dramatically in 2025, posting a 6.01 ERA, 1.493 WHIP and surrendering 90 earned runs in 134.2 innings, the most in baseball. He has 87 strikeouts and 53 walks, resulting in a 5.00 FIP, 5.8 K/9 and -1.3 WAR on Baseball Reference. After a 2.65 April ERA, his numbers rose to 4.65 by May and have only worsened since. Parker's declining command and effectiveness have turned his starts into near-guaranteed losses every fifth day. The Nationals lack a clear internal replacement option for the rotation.
During this offseason, when Patrick Corbin had finally decided to move on, the franchise was hopeful that a porous performance every fifth day was in the rearview mirror, but alas, 2025 Mitchell Parker is making a case to be even worse than some of Corbin's worst campaigns. After a somewhat promising rookie season and a strong start to his sophomore campaign, Parker has completely bottomed out, and is actively holding back this team.
From a numbers perspective on Parker in 2025, it's ugly. He has a 6.01 ERA and 1.493 WHIP, and has surrendered the most earned runs in all of baseball with 90 allowed in 134.2 innings. He has only struck out 87 batters compared to 53 walks, which is already 10 more walks given up than he allowed all of last season in 16.1 less innings.
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