Patrick Mouratoglou, who helps coach Serena Williams, says it was suprising that it took the 15-time Grand Slam champion so long to retake the No. 1 ranking from Victoria Azarenka. Williams became No. 1 last Monday after she reached the final of Doha, where she lost to Azarenka.

“I don’t know if she cared but it was a bit shocking,” Mouratoglou said. “Nothing against Azarenka, who had an unbelievable year too, but it’s a bit shocking to win two Grand Slams, the Olympics and the Masters plus some other tournaments  -- Serena won Madrid, Stanford, and Charleston too  -- and to be still number three.

“So people are saying maybe the WTA should look at how they give the points. There is a huge difference between being a finalist in a Grand Slam and a winner and maybe the points don’t show how much difference. Maybe they should have a look at it. I understand that they want players to play all the year, but for the people who watch it’s important to be able to understand tennis.”