Denis Shapovalov didn't want to hang around waiting while third round opponent Reilly Opelka argued with the umpire at the Australian Open.
The world no 14 finished strongly to win in four sets at the Margaret Court Arena, eventually prevailing 7-6 4-6 6-3 6-4.
The Canadian, a semi finalist at Wimbledon last year where he was beaten by eventual champion Novak Djokovic, has now secured his best ever run at Melbourne Park by securing a spot in the last 16.
His win over Opelka ended the American's own hopes of a first ever fourth round appearance at the tournament, but a tight contest was tainted by a bizarre talking point midway through the first set.
With the scores locked at 40-40 and deuce, Opelka, 24, was given a time violation warning as he appeared to prolong the build-up to his crucial serve.
In a strange riposte, he argued the call before concluding with comments aimed at the female umpire: "Really, I brought my pink bag and she was like 'oh no turn around' - she doesn't like me," he said.
He then seemed to be in conversation with the crowd, saying the officiating was affecting his "mental health."
