Athletic trainer Eric Fry did not disclose the nature of the injury or when it happened. Fry said Wednesday that Felix had surgery on Oct. 1 and is expected to make a full recovery. He said there was no specific timetable for Felix's return.
Felix started 23 games for Texas last season, and averaged 6.8 points and had 139 assists.
Texas starts the season Nov. 8 against Mercer.