CEDAR RAPIDS — Former Cedar Rapids Washington prep and Oakland Athletics mega-prospect A.J. Puk has been diagnosed with a torn ulnar collateral ligament in his left pitching elbow and will undergo season-ending Tommy John surgery, the club announced Tuesday night.
Puk was widely considered one of the top-20 minor league prospects in baseball. He was shut down last week with biceps soreness.
The 22-year-old left-hander was Oakland’s first-round draft pick (sixth overall) in the 2016 draft out of the University of Florida. He struck out 224 hitters in 157 2/3 innings in his professional career and impressed everyone with a strong major league spring training.
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