Mitchell, the 21-year-old, five-tool prospect, tore a tendon on the inside of his left ankle while making a catch at Diablo Stadium in Tempe, Ariz., during Spring Training, sidelining him for the entirety of the 2010 season. Mitchell's on-field target remains fall instructional league, and is progressing "very well," according to White Sox athletic trainer Herm Schneider.
Mitchell continues to work on hitting, running, agility and taking fly balls at Class A Winston-Salem, within a controlled environment. Mitchell is also working on getting stronger as the ankle heals.
Peavy had surgery performed on July 14 to repair a detached latissimus dorsi muscle in his right posterior shoulder. He is resting until the six-week mark following surgery and will then be evaluated.
"Obviously, it was a major deal," said White Sox general manager Ken Williams. "But as far as the prognosis, I haven't been given any reason to think he won't be ready for Spring Training."