The unwritten rules of tennis and why postmatch handshakes sometimes go awry at the US Open
Associated Press
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Daniel Altmaier, left, of Germany, is congratulated by Stefanos Tsitsipas, of Greece, after defeating him during the second round of the U.S. Open tennis championships, Thursday, Aug. 28, 2025, in New York. (AP Photo/Frank Franklin II)Coco Gauff, of the United States, right, and Ajla Tomljanovic, of Australia, left, embrace across the net after Gauff won their match during the first round of the U.S. Open tennis championships, Tuesday, Aug. 26, 2025, in New York. (AP Photo/Frank Franklin II)Nuno Borges, left, of Portugal, congratulates Tommy Paul, of the United States, after being defeated by him during the second round of the U.S. Open tennis championships, Thursday, Aug. 28, 2025, in New York. (AP Photo/Frank Franklin II)Arthur Rinderknech, of France, right, shakes hands with Alejandro Davidovich Fokina, of Spain, after winning their second-round match of the U.S. Open tennis championships, Wednesday, Aug. 27, 2025, in New York. (AP Photo/Adam Hunger)Aryna Sabalenka, of Belarus, hugs Polina Kudermetova, of Russia, after their second round of the U.S. Open tennis championships, Wednesday, Aug. 27, 2025, in New York. (AP Photo/Adam Hunger)
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Daniel Altmaier, left, of Germany, is congratulated by Stefanos Tsitsipas, of Greece, after defeating him during the second round of the U.S. Open tennis championships, Thursday, Aug. 28, 2025, in New York. (AP Photo/Frank Franklin II)
