Stefanos Tsitsipas ’ poor run continued with a second-round defeat at the US Open, adding more drama to the opening week. The Greek star fell in a five-set battle to world No. 56 Daniel Altmaier , who claimed a 6-7(5), 6-1, 6-4, 3-6, 7-5 win on Grandstand court.

The match ended with controversy as Tsitsipas confronted Altmaier at the net , angry over the German’s use of an underarm serve. Tsitsipas warned he would hit the ball at him if it happened again. Altmaier later responded to the remarks, saying Tsitsipas would regret those words and that he stood by his tactical choice. Altmaier said on Bounce:

Tomorrow, Stefanos will regret his words. In football, fists fly or people get into arguments. In tennis, you say something that might not be appropriate. That’s part of the sport. A

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