After being red-shirted during the 2005-2006 season with a knee injury, Sumpter returned to the Wildcats' lineup for the 2006-2007 season and earned first team All-Big East honors.
Sumpter returned to the Wildcats' starting lineup after being relegated to a reserve role during the 2005-2006 season due to an injury, and subsequently received All-Big East honors for the 2006-2007 season.