Two days after playing in the Independence Bowl, North Carolina quarterback Bryn Renner had surgery on Wednesday to repair an ankle problem, the school announced.
Renner underwent a procedure in which an anterior bone spur and a posterior accessory bone were removed from his left ankle.
Renner's ankle condition became a problem in July, about three weeks before the start of UNC's training camp.
But Renner decided to play with a hinged ankle brace and postpone surgery until after the season.
Renner finished his sophomore season as the top-rated QB in the Atlantic Coast Conference and No. 9 in the country.
He was 27-for-42 for three touchdowns and an interception in the 41-24 loss to Missouri in the Independence Bowl.
It's unclear whether Renner will be available for spring practice.