Over the past few years, the Oakland A's have had success finding pitching depth on the minor league…
Profiling The A's MiLB Free Agent Class, P. 2
To view part one of this article, please click here. Right-hander Yeiper Castillo – a 24-year-old starter coming from the Red Sox – spent the 2012 season at both A-Levels while showing progression as he moved up to the Carolina League. With the Greenville Drive of the South Atlantic League, he compiled a 4.05 ERA and 4.24 FIP in 17 appearances, 11 of which were starts. At 6'3" and just 186 pounds, the Venezuelan has plenty of maturing to do physically, which should add to his live fastball that sits in low-90s and has reportedly been clocked as high as a 94 miles an hour. Fastball command was perhaps his biggest issue, but he was able to lower his WHIP from 1.41 to 1.16 in 11 starts after his midseason promotion to High-A Salem. His changeup is his out pitch, while his curveball needs to improve in order for him to keep ascending up the ranks. It's likely he will also need to add a fourth pitch to his repertoire. Another righty, Mike Ekstrom, has made appearances in the majors...
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