GLENDALE, Ariz. - White Sox outfielder Jared Mitchell underwent successful surgery this morning to repair a retinaculum tear of the tendon in his left ankle on the medial (inside) side.

Mitchell, 21, is expected to miss the 2010 season, but his prognosis is to make a full and complete recovery. He will be immobilized for 4-6 weeks before beginning the rehabilitation process.

The 75-minute procedure, performed by Dr. John Nassar, a foot and ankle specialist at the Greenbaum Outpatient Surgery in Scottsdale, Ariz., went "extremely well."

Mitchell, who suffered the injury making a catch on March 12 at the Los Angeles Angels, will undergo a follow-up examination on Friday.

This story was not subject to the approval of Major League Baseball or its clubs.