Nick Kyrgios Pictures
ACAPULCO, MEXICO - FEBRUARY 25: Nick Kyrigios of Australia retires after an injury during the singles match between Nick Kyrigios of Australia and Ugo Humbert of France as part of the ATP Mexican Open 2020 Day 2 at Princess Mundo Imperial on February 25, 2020 in Acapulco, Mexico. (Photo by Hector Vivas/Getty Images)