While rehabbing a back injury, Jones, tore the ulnar collateral ligament in his elbow, requiring reconstructive surgery. Dr. James Andrews performed the operation Tuesday, according to White Sox general manager Rick Hahn.
In his rookie year, 2012, Jones went 8-0 with a 2.39 ERA in 65 appearances. Last season his ERA rose to 4.15, but Jones struck out 89 batters in 78 innings. His 10.27 strikeouts per nine innings was the eighth-highest rate in baseball among pitchers who threw at least 70 innings.
Jones is expected to miss 12 to 15 months while recovering from the new injury.
- Alex Hampl
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