DOHA, Qatar (AP) Elena Dementieva of Russia rallied to beat Samantha Stosur 4-6, 6-4, 7-6 (4) Thursday for her first group-stage win at the WTA Championships.

Stosur earned a place in the semifinals despite the loss, having won her first two singles matches at the tournament. Dementieva is 1-1 after losing to Caroline Wozniacki in her first round-robin match.

Dementieva took a 3-1 lead in the second set before leveling the match with a blistering backhand down the line. Dementieva saved both break points she faced in the third set, which went with serve until the tiebreaker.

Wozniacki played Francesca Schiavone of Italy later Thursday.