Sam Querrey looks to rebuild his ranking and confidence with success at ATP Challenges such as the Tiburon, California event.
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Bob and Mike Bryan will pursue their 100th doubles title at the US Open against Marcel Granollers and Marc Lopez.
Feliciano Lopez reached an ATP Masters 1000 semifinal at the Rogers Cup by defeating Tomas Berdych and Milos Raonic.
Serena Williams, Maria Sharapova, Li Na, Simona Halep, and Eugenie Bouchard all can make claims, but nobody has taken command yet.
Former world No. 3 and French Open finalist David Ferrer faces a tall task in returning to the top of the ATP.
Some of the less obvious candidates for the Hall of Fame among current ATP and WTA players include Ana Ivanovic, Petra Kvitova, Svetlana Kuznetsova, Daniel Nestor, and Lleyton Hewitt.
Notable third-round ATP matches at the 2014 French Open saw Rafael Nadal and Gael Monfils advance as Andy Murray and Richard Gasquet were suspended.
Stanislas Wawrinka has emerged a plausible rival for the ATP contenders Rafael Nadal, Novak Djokovic, Roger Federer, and Andy Murray.
Jo-Wilfried Tsonga, Richard Gasquet, and Gael Monfils have vast reserves of talents but no major titles to show for it.
Although home hopes like John Isner are long shots to win the Sony Open in Miami this year, American men once dominated the ATP Masters 1000 tournament.