Casilla to undergo surgery on leg
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SAN FRANCISCO – Giants reliever Santiago Casilla will undergo surgery in the next week to remove a cyst in his right leg, manager Bruce Bochy confirmed Sunday.

It’s been assumed for some time that Casilla would have surgery to deal with an injury that has bothered him going back to last season. Casilla was placed on the 15-day disabled list Tuesday but pitched sparingly in the games leading up to that as his leg was hurting him.

It was originally announced that Casilla’s cyst was in his right knee, but Giants head trainer Dave Groeschner clarified Sunday that the cyst is actually in the tibia bone below the knee itself.

Casilla’s procedure will take place at Stanford Medical Center. Groeschner said he wouldn’t have a timetable for Casilla to pitch until after the surgery is done, but he added that Casilla’s leg would “be immobilized at least a few weeks afterward.”

Casilla is 3-2 with a 1.89 ERA in 21 appearances this season, and filling his role as a right-handed setup man figures to be some combination of Jean Machi, Chad Gaudin and George Kontos.