In 2011, Khallaf competed at the 2011 FINA World Championships in the Team events, placing 17th in Technical Team with a score of 77.100, and 15th in Free Team with a score of 78.200.
Khallaf competed at the 2011 FINA World Championships in the Team events. This was in 2011. Khallaf was placing 17th in Technical Team with a score of 77.100. This was in 2011. Khallaf was placing 15th in Free Team with a score of 78.200. This was in 2011.