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Tommy Paul, United States, def. Frances Tiafoe (8), United States, 5-7, 7-6 (5), 6-4.

Denis Shapovalov (3), Canada, def. Felix Auger-Aliassime (2), Canada, 6-4, 7-5.

Aisam-ul-Haq Qureshi, Pakistan, and Jean-Julien Rojer, Netherlands, def. Markus Eriksson and Elias Ymer, Sweden, 6-3, 6-2.

Santiago Gonzalez, Mexico, and Andres Molteni, Argentina, def. Botic van de Zandschulp, Netherlands, and Emil Ruusuvuori, Finland, 7-6 (2), 6-2.