Just like in her yesterday's win over Angelique Kerber, Serena Williams' first serve percentage was below 50% and again it didn't stop her from winning at the WTA Championships, this time against Li Na, who opened her action at the tournament today.
The match started with Serena breaking Li's serve, but the Chinese broke right back and later once again to lead 4-1. As always, it was too early to predict anything and put the cards on Li. Serena managed to climb back to 4-4 and at 5-4 she was serving for the set. It was not over yet, though. She was broken to love and at 6-5 again, before racing through the tiebreak. In all, this match had 11 breaks of serve, eight in the first set. Final score: 7-6(2) 6-3.
Only four times has Williams lost to players 30 or older and the last time it happened was against Patty Schnyder in 2009. Williams has now won 45 of her last 47 matches.
Serena's remaining opponent in the Red Group round-robin action is world No.1 Victoria Azarenka. (photo: © Neal Trousdale)