PROSPECT: Marcelo Perez, SP, Seattle Mariners
ANALYSIS: Marcelo Perez worked as a swingman during his four years at Texas Christian. Despite strong metrics on his pitches, his frame (5'10" and 180-ish pounds) likely drove away teams and allowed him to last until the 11th round for Seattle. He pitched deep into the postseason with the Horned Frogs and did not make his pro debut until this season.
Perez works with a low-90s fastball that has strong sinking action along with an above-average slider and a change. He's been able to pound the zone and limit home runs this season, posting a 2.61 ERA over 62 innings with a 61/18 K/BB.
VERDICT: Perez is in Single-A Modesto, even though his performance and age likely would indicate a promotion to High-A. The Mariners are working to build innings on his arm, but until he can show it in the upper minors, he doesn't need to be rostered.
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