Castillo pulled himself out of a rough patch Sunday, snaring a quality start and not allowing a home run. The 32-year-old had allowed 16 runs (14 earned) in 22 innings over his previous four starts.

Luis Castillo has been a solid mid-rotation option so far this season with the Seattle Mariners, but there's been a worrying development in his recent starts.

The Red Sox were on the verge of acquiring Dominican pitcher Luis Castillo last offseason, but a surprising obstacle got in the way.

New information has come to light on Luis Castillo trade negotiations between the Mariners and Red Sox, and they aren't flattering for Boston.

Castillo allowed five runs on seven hits and two walks while striking out three over five innings in Tuesday's win over the Twins. He did not factor into the decision.

Two pitchers looking to return to their winning ways will square off when the Texas Rangers and Seattle Mariners clash on Sunday afternoon in the rubber match of the three-game series in Arlington ...

Castillo is 2-3 with a 3.58 ERA in six career starts against the Rangers, allowing 13 runs on 30 hits and 11 walks with 34 strikeouts in 32 2/3 innings.