De los Santos may not have as high a ceiling as other pitchers in the system, but that doesn't detract from his solid 2009 season and overall steady progress. He has a live arm and works well off his 91-93 mph fastball. He labored diligently on his hard slider and changeup last year and threw strikes with both pitches, and his overall command improved considerably. His slider needs more consistency and sharper break, and he has flirted with switching to more of a cutter. Even without a quality breaking ball, lefthanders rarely take good cuts against him and posted a .485 OPS against him last season. The Rays like de los Santos' fearless, competitive approach and his outgoing personality. He has made a strong effort to become fluent in English and has shown the willingness to do whatever it takes to reach the big leagues. He's undersized but has good mound presence and challenges hitters. Most likely a situational reliever at the major league level, de los Santos must continue to refine his complementary pitches this year in high Class A.
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