Ohio State University graduate Chase Buchanan fell to Joao Sousa at the ATP Masters 1000 tournament in Cincinnati as Taylor Townsend, Madison Keys, and Fernando Verdasco advanced.
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Vasek Pospisil reached his first ATP final at the Citi Open last week before losing in the first round of the Rogers Cup, but he should continue to threaten during the US Open Series.
A quarterfinal appearance at the ATP 250 tournament in Umag, where he nearly upset Fabio Fognini, exhibited the potential of young Croatian talent Borna Coric.
An ATP 250 title in Bogota could turn around the fortunes of struggling Australian tennis prodigy Bernard Tomic.
Stanislas Wawrinka, Grigor Dimitrov, and Roberto Bautista-Agut have taken significant steps forward, while Jo-Wilfried Tsonga and Jerzy Janowicz have followed the opposite path.
Despite a loss to Roger Federer in a Wimbledon quarterfinal, Stan Wawrinka overcame physical adversity to produce impressive tennis.
Milos Raonic has improved his baseline game to become a genuine ATP contender at events like Wimbledon, as his victory over Kei Nishikori showed.
Compelling ATP third-round and fourth-round action at Wimbledon featured strong efforts by Stan Wawrinka and Feliciano Lopez, while Jo-Wilfried Tsonga and Kei Nishikori struggled.
Pivotal ATP third-round action at Wimbledon saw Jo-Wilfried Tsonga, Andy Murray, and Marin Cilic advance, while Fabio Fognini and Sergiy Stakhovsky fell.
Compelling ATP second-round matches at Wimbledon saw Nick Kyrgios, Milos Raonic, and Kei Nishikori impress, while Gael Monfils, John Isner, and Philipp Kohlschreiber did not.