Tennis-Tsitsipas upset by underarm serves as he slumps out of US Open

FILE PHOTO: Jul 30, 2025; Toronto, ON, Canada; Stefanos Tsitsipas (GRE) plays a shot against Christopher O'Connell (AUS) during second round play at Sobeys Stadium. Mandatory Credit: Dan Hamilton-Imagn Images/File Photo

NEW YORK (Reuters) -A frustrated Stefanos Tsitsipas took exception to his opponent's tactics after blowing a match point and exiting the U.S. Open in the second round courtesy of a five-set loss to Daniel Altmaier on Thursday.

The 7-6(5) 1-6 4-6 6-3 7-5 defeat means former world number three Tsitsipas will end the season without playing in the third round of a Grand Slam for the first time since 2017.