Washington Nationals Southpaw Mitchell Parker Tosses Historic 8-Inning Gem

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The Washington Nationals' lineup provided more than enough insurance against the Baltimore Orioles on Tuesday night, but that didn't stop Mitchell Parker from turning in a career-best performance on the mound.
Parker walked the first batter he faced, then retired seven in a row. Another walk in the third inning broke that streak, and it was immediately followed by a single.
That's when Parker locked in.
Parker saw 17 batters for the rest of the night, and he sat down each and every one of them. By the time he got the hook, the 25-year-old left-hander had allowed just one hit and two walks across 8.0 scoreless innings of action.
According to Underdog Fantasy's Justin Havens, Parker is the first Nationals lefty to go at least 8.0 innings while allowing one or fewer hits since Gio González did so on July 31, 2017.
Mitchell Parker is the first Nationals left-handed pitcher with 8+ IP and 1/0 hits allowed since Gio González on July 31, 2019.
— nugget chef (@jayhaykid) April 23, 2025
Washington went on to win 7-0, improving to 10-13 and setting up a potential series clincher against Baltimore on Wednesday.
As for Parker, he is now 3-1 with a 1.39 ERA and 0.928 WHIP on the season. That is quite the step up from his rookie campaign in 2024, when he went 7-10 with a 4.29 ERA, 1.305 WHIP and 0.7 WAR.
The highest Game Score of Parker's career entering Tuesday was 79. He wound up posting an 82 against the Orioles.
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Sam Connon is a staff writer covering baseball for “Fastball on SI.’’ He previously covered UCLA Athletics for On SI’s All Bruins site, and is a UCLA graduate, with his work there as a sports columnist receiving awards from the College Media Association and Society of Professional Journalists. Connon also wrote for On SI’s New England Patriots site, Patriots Country, and he was on the Patriots and Boston Red Sox beats at Prime Time Sports Talk. Sam lives in Boston.
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