"Luckily I stayed calm and didn't lose my focus," Krajinovic added. "I was able to play my game. I don't want to overdo it either, especially not expecting behavior like this from him.""I always had in mind that Stefanos was a good guy and a player characterized by fair play, but the way he acted today was very strange," the Serb said. "We all saw what he did. He used the bathroom for 10 minutes after losing 6–1 in the second set."
"I hope Stefanos Tsitsipas will apologize one day for his behavior" - Filip Krajinovic after Hamburg QF win (sportskeeda.com)