It was supposed to be about Kyrgios and Tsitsipas, but Juan Sebastian Cabal stole the show at the Citi Open on Monday night.
The American won her two qualifying matches over the weekend and will face Zarina Diyas in her opening-round match.
The Philadelphia Freedoms clinched a playoff spot and the New York Empire moved closer.
Two-time Grand Slam champion withdraws from Washington, DC over visa problems.
The World No.1 said in a statement that he needs time to fully recover from the grass-court grind.
The WTT's first CBS Broadcast became the most-watched in the league's 44-year history.
The American will make her first WTA-level appearance of 2019.
