Bosnia's Damir Dzumhur let his emotions get the best of him in his second-round qualifying match against Botic van de Zandschulp at the Mexican Open.
The world No. 125 was frustrated with the chair umpire throughout the opening set, but became furious at 5-5, deuce, when the umpire didn't overrule a forehand hit by his Dutch opponent that was called in. The call would give his opponent advantage in the extremely tight game.