Dominic Thiem (ATP 3) si è qualificato per i quarti degli US Open senza concedere ulteriori set. Fatta eccezione per la prima frazione, il promettente canadese Felix Auger-Aliassime (21) non ha avuto la costanza e la forza per contrapporsi alla potenza dell'austriaco, impostosi per 7-6 (7/4) 6-1 6-1 in 2h07'. Sulla strada verso la finale e il primo titolo dello Slam, il 27enne incrocerà ora Alex De Minaur (28), che ha regolato Vasek Pospisil (98) per 7-6 (8/6) 6-3 6-2.
In campo femminile ha rischiato grosso Serena Williams (WTA 8). Contro la greca Maria Sakkari (22), che l'aveva eliminata a Cincinnati 2 settimane fa, l'americana ha dovuto recuperare un break nel terzo set prima di avere la meglio con il risultato di 6-3 6-7 (6/8) 6-3. Nei quarti affronterà Tsvetana Pironkova, rientrata sul circuito dopo una pausa per maternità e perciò senza classifica.
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