Some numbers from around the tennis world:
5: Consecutive seasons that Andy Murray has defended his crown at an ATP tournament after a successful title defense in Shanghai. The other successful title defense are: 2007, San Jose; 2008, St. Petersburg; 2009, Doha; 2010, Montreal/Toronto.
15: Times in the last 16 Grand Slams that Roger Federer and Novak Djokovic have drawn into the same half, according to the ATP's Greg Sharko.
18: Men voted more influential than Novak Djokovic in an AskMen.com poll. Topping the list are Steve Jobs, SEAL Team Six and Larry Page.
3: Qualifiers who reached the quarterfinals at the ATP's Erste Bank Open in Vienna this week -- Tommy Haas, Daniel Brands and Steve Darcis. Haas lost to Juan Martin del Potro, while Brands defeated Darcis to advance to the semifinals.
34-0: Maria Sharapova's record this year when she wins the first set, according to the WTA's Kevin Fischer.
11,269: Average attendance during the first four days of the WTA Championships in the tournament's first year in Istanbul.
115: Points that will separate Petra Kvitova and top-ranked Caroline Wozniacki if Kvitova wins the WTA Championships.
8: Players who have finished as WTA No. 1 in consecutive seasons. Wozniacki has joined Chris Evert, Martina Navratilova, Steffi Graf, Monica Seles, Lindsay Davenport, Justine Henin and Martina Hingis. 18: Percent reduction in withdrawals since the WTA Roadmap went into effect.