The Royals revealed Wednesday that Mondesi (knee) underwent successful surgery last week, Anne Rogers of MLB.com reports.
Mondesi was diagnosed with a torn ACL in late April, and he'll now begin his lengthy recovery process following his successful procedure. The 26-year-old is expected to require 6-to-9 months to recover, so he'll likely miss the remainder of the season. Nicky Lopez has served as Kansas City's primary shortstop since Mondesi sustained his injury.