The green lawns of the All England Club and the red dirt of Roland Garros have faded into the background and the U.S. summer hard court season is quickly accelerating to its final and ultimate destination: the US Open.
After back-to-back Premier Mandatory events in Toronto and Cincinnati, only the top two in the last women's power rankings managed to stay in the top 10 this time.
Many top players took a break after Wimbledon to recuperate. And most of them chose the mandatory event at Stanford as their first tournament back. Serena Williams was unquestionably the player of the US Open Series, taking two big titles in Stanford and Toronto, while the last two Grand Slam winners Petra Kvitova and Li Na struggled to find their top form. The biggest surprise, though, was the poor performance of the world No. 1 Caroline Wozniacki, who suffered back-to-back first-round losses in Toronto and Cincinnati.
The "Power Rankings" is a season-long series written by JA Allen, Marianne Bevis and myself. In each installment, we make a list of the top 10 players who have performed the best in the four events they played prior to the rankings. The ranking is aimed to reflect the current form of the players rather than their overall abilities. For a detailed explanation of how the rankings work, please see The Power Ranking System.