Upsets of Rafael Nadal, Lleyton Hewitt, and Gilles Simon in ATP events at Doha and Brisbane might not mean much for the Australian Open.
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Diego Sebastian Schwartzmann hopes to take the next step forward at ATP tournaments next year.
Sam Groth rose up the ATP rankings in 2014 and could make an impact during the 2015 tennis season.
After a breakthrough ATP season, Blaz Rola looks to build on his collegiate tennis success at Ohio State.
A viewpoint on the ATP considers the rise of Stan Wawrinka, the resurgence of Roger Federer, the extended exploits of Novak Djokovic and Rafael Nadal, the emergence of Nick Kyrgios, and the decline of David Ferrer.
Rising talents like Diego Sebastian Schwartzmann, Blaz Rola, and Guilherme Clezar look to end the year on a high note at the ATP Challenger Tour Finals in Brazil.
Kei Nishikori, Milos Raonic, and Marin Cilic have achieved mixed results so far at the ATP World Tour Finals.
Sam Querrey eschewed playing on the ATP Tour after the US Open and rebuilt his confidence at the Challenger level.
Kei Nishikori, Tomas Berdych, Andy Murray, David Ferrer, Milos Raonic, and Grigor Dimitrov still eye the chance of reaching the ATP World Tour Finals.
After winning the US Open, Marin Cilic fell early at ATP events in Beijing and Shanghai to Andy Murray and Ivo Karlovic, respectively.