Rosters don't have to be set until 5:00 p.m. on Wednesday, but the Pirates trimmed down theirs to 27 on Tuesday after optioning left-handed reliever Daniel Moskos to Triple-A Indianapolis.

Moskos, 24,allowed one earned run on six hits over 9.0 innings during Grapefruit League action this spring. He walked five and struck out nine over nine appearances.

Moskos, the Pirates first round pick in the 1st round of the 2007 draft, made his Major League debut last season in Pittsburgh. After making eight appearances with Triple-A Indianapolis, where he posted a 1.69 ERA, Moskos was called up on April 30 against the Colorado Rockies and tossed a perfect inning of relief. The 25-year-old lefty went on to make 30 more appearances with the Pirates, where he posted a 2.96 ERA over 24.1 innings.
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