As Luis Castillo came set for what he thought would be his final pitch of the night, he had his trademark fist clench ready ...

Luis Castillo, on a 3-2 pitch, painted a 96.8-mph fastball on the outer edge to strike out Oneil Cruz looking to end the top of the seventh inning Saturday night.

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Mariners' Luis Castillo: Tagged for three homersCastillo (4-4) allowed six runs (four earned) on eight hits and struck out five without walking a batter over five innings, taking the loss Saturday ...

While his strikeout rate is down from 9.0 K/9 in 2024 to 7.2 K/9 in 2025, Castillo holds a 3.03 ERA, which would be his best since 2022. He's expected to pitch next weekend against the Angels.

Castillo, a three-time All-Star, tossed seven shutout innings with five strikeouts to earn his fourth win of the season. He's sporting a 3.20 ERA through 10 starts this season.

He's posted a 3.65 ERA, 1.38 WHIP and 39:20 K:BB across 49.1 innings through nine starts in 2025. Castillo is projected for a much more favorable matchup on the road versus the White Sox next week.

No, not that one. Luis F. Castillo shares a name with Seattle’s three-time All-Star The Orioles acquired right-hander Luis F. Castillo from the Seattle Mariners for cash considerations on Wednesday.

Castillo sits in the 91-92 MPH range with both his four-seam fastball and sinker. There’s not much swing-and-miss upside but he has a full slate of minor league options.