Sophomore center Dajuan Coleman of unbeaten No. 2 Syracuse will have surgery on his left knee and miss the rest of the season.
The decision was announced Tuesday by coach Jim Boeheim.
Coleman started the first 12 games and averaged 4.3 points and 4.2 rebounds while playing 13 minutes a game in the Orange's three-man rotation at center.
The knee problem resurfaced three weeks ago when Coleman started but played just six minutes against Villanova on Dec. 28.
Coleman had surgery on the same knee last season because of cartilage damage. He returned for four games but played sparingly.
Syracuse is 18-0 and along with No. 1 Arizona and No. 5 Wichita State are the only unbeaten teams in Division I.