The World No.1 is aiming to play the Paris games in 2024.
The American is into the round of 16 at the Citi Open
The Aussie believes that Elias Ymer wasn't owning up to a double bounce, but it never was called.
Canadian trio join Simona Halep as wild-card recipients.
Newport finalist Jenson Brooksby topped No. 53 Frances Tiafoe 7-6(4), 7-5 in Washington, DC for the biggest win of his career.
"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.
