Serbia's Ana Ivanovic advanced to the second round of the Qatar Open on Monday when Carla Suarez Navarro withdrew midway through their match because of a back injury. Ivanovic, the 2008 French Open champion, was leading 6-1, 4-1. Trailing 1-2 in the second set, Suarez Navarro had already sought courtside treatment from the WTA Tour medical team. The Spaniard then briefly left the court before resuming the set.