Seattle Mariners Lose Ace Pitcher to Injury on Sunday

Castillo threw 3.0 innings, striking out three. He gave up two runs. An All-Star in 2023, Castillo is 11-12 this year with a 3.64 ERA. He's struck out 175 batters in 175.1 innings. "The Rock" is an anchor in the M's rotation, pairing with Logan Gilbert, George Kirby, Bryce Miller and Bryan Woo to make up the best - and deepest - rotation in baseball.

The Mariners will be in a precarious situation moving forward. Entering play at 5.5 games back in the American League West, and 4.5 games back in the wild card race, they need Castillo if they want to make a last push. However, given the amount of time remaining in the season, any injured list stint could cost him the rest of the season.

Castillo is in the eighth year of his career with the Cincinnati Reds and Mariners. He was acquired by Seattle at the trade deadline in 2022, helping them make the playoffs for the first time since 2001. He also won a game in the playoffs.

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