By Jon Wertheim
October 30, 2013
Serena Williams went 78-4 with a career-high 11 titles, including two Grand Slam crowns, this year.
Ozan Kose/AFP/Getty Images

• Your note reminds me of this. From the fairness and balance department, here's Jeff W. of Columbus, Ohio: "Why have we never heard of the WTA Tournament of Champions? This is a thing? With two entrants who aren't 2013 "champions"? Tsvetana Pironkova? For real?"

Marin Cilic returned to the ATP Tour this week after serving a four-month doping suspension.
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• Seth Schwarzman has long-lost siblings: Richard Gasquet and a young Howard Dean.

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