"I'm dealing with problems like we all are. I feel like it affected me a little bit today," said Nick Kyrgios after opening-exit in Washington, DC.
Felix Auger-Aliassime lost his Olympic opener, but learned from the experience.
A trio of big stars will sit out next week's Omnium Banque Nationale in Montreal.
The two-time champion and the rising American will joined the star-studded draw in the last event prior to the US Open.
Rafa Nadal shows full support for gymnastics star Simone Biles in a CBS interview.
Moroccan player Simohamed Hirs has been banned for life from the sport, following investigations into multiple incidents of match fixing.
After winning Nottingham and upsetting Stefanos Tsitsipas at Wimbledon, Frances Tiafoe is poised to make his move.
