Kyrgios retired from Citi Open becaus of injury

Nick Kyrgios, who won his fourth career ATP title in January at Brisbane, retired last week from a quarter-final at the Atlanta Open because of  the hip injury. Kyrgios tweeted: "Absolutely gutted to have to withdraw from Citi Open. I've done all I can to get my hip ready but ran out of time. I want to thank Keely (O'Brien, tournament director) and her team for the support and apologise to the fans. I'll be back!" US Open starts on August 27 in New York. Kyrgios' injury can be a reason not to participate in that championship.

Absolutely gutted to have to withdraw from @CitiOpen I’ve done all I can to get my hip ready but ran out of time. I want to thank Keely & her team for the support and apologise to the fans. I’ll be back! ❤🙏🏽

— Nicholas Kyrgios (@NickKyrgios) August 1, 2018