Stefanos Tsitsipas confronted Daniel Altmaier and expressed his disapproval at his opponent’s underarm serving after a five-set defeat to the German in the US Open second round.
Tsitsipas had a match point towards the end of the fifth set but could not take it as Altmaier prevailed, winning 7-6(5) 1-6 4-6 6-3 7-5 in a tough contest that lasted over four hours.
