Nick Kyrgios was losing big at the U.S. Open on Thursday, and barely even trying. Didn't move while so-so serves flew by for aces. Casually put groundstrokes into the net. Double-faulted without caring. The crowd began booing. The chair umpire, Mohamed Lahyani, decided to intervene. In an unusual sight for Grand Slam tennis, Lahyani clambered […]
