 50 in August 2011 on the Professional Squash Association Tour with 9 individual titles.Khalifa left the PSA Tour in December 2012 and enrolled as an undergraduate student at Saint Lawrence University in Canton, New York in January 2013.In February 2013 Khalifa led the St. Lawrence "Saints" squash team to a best ever 6th place overall finish at the United States Intercollegiate Team Squash Championships held at Yale University in New Haven, Connecticut.