With Serena Williams again absent, which player will deliver in the desert?
Serena Williams is the heavy favorite to win the year-enders in Istanbul. But it wouldn't be nice if we didn't assess the other players' chances, too.
Not every American tennis plays enjoys life away from the homeland. Madison Keys is not one of them.
Tommy Robredo is one of tennis' most tenacious survivors -- as he proved for a third straight time in Paris.
On the day Andy Roddick said this will be it for him, Venus Williams did little to soothe the sorrows of the U.S. tennis fans.
The saga of Caroline Wozniacki took its worst turn when she lost her U.S. Open first-rounder.
Serena Williams has found her next gear. That might be a problem for Agnieszka Radwanska.
Serena Williams hits ball harder than anyone. Caroline Wozniacki found that out the hard way.