The field for the WTA Finals has been set for some time, but that hasn't stopped the elite eight players from trying to gain some momentum heading into the year-end event.
Remember back in the day when we thought Roger Federer was washed up? Silly us. Suddenly, he's the player to beat on tour ... again.
From a drug suspension to US Open final four, Marin Cilic is having career tournament.
Roger Federer has not accepted anything less than his best this fortnight, and it's showing, writes Greg Garber.
Playing his less-than-best tennis, Novak Djokovic finally stopped ultra-talented Grigor Dimitrov, writes Greg Garber.
Milos Raonic, behind his tournament-high 147 aces, took a huge step by reaching his first Grand Slam semifinal, writes Greg Garber.
Ernests Gulbis has dedicated himself to being a professional, sailed up the rankings and is having fun doing it, writes Greg Garber.
Despite an ordinary season so far, world No. 1 Serena Williams owns the Sony Open, Greg Garber writes.
By the thinnest of margins, Stanislas Wawrinka finally gets his shot at a Grand Slam title.
Stanislas Wawrinka waited a long time to get here, but patience and persistence paid off for him in his ATP World Tour Finals debut.
This was a comeback that was astonishing by even Rafael Nadal's own absurdly high standards.
Moments after Roger Federer lost, Rafael Nadal found himself in a tussle. But then Rafa played like Rafa.
The Bryan brothers lived dangerously in the third round of the US Open. But like they have in every Grand Slam match for more than a year, they found a way to win.
Raise your hand if you thought Rafael Nadal could make this kind of comeback? If you did, we don't believe you.
It was fitting that on this Fourth of July the Bryan brothers had some fireworks of their own.
John Isner fought with gusto and heart, but after 8 hours, 27 minutes on court the past two days, it was too much.