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.
After being relegated to a reserve role during the 2005-2006 season due to a knee injury, Sumpter rejoined the Wildcats' starting lineup for the 2006-2007 season and received first team All-Big East accolades.