Sinner has misplaced solely two hard-court matches this season and gained 4 titles on the floor, together with his first Grand Slam triumph at January’s Australian Open.
His most up-to-date success was at Cincinnati in August, successful the title the day earlier than information emerged he had been cleared of any wrongdoing after twice testing constructive for a banned substance earlier this 12 months.
Sinner seemed near his finest in opposition to O’Connell, firing down 46 winners and 15 aces, whereas he denied the world quantity 87 any break factors throughout the three units.
With Djokovic and Alcaraz – the final two champions in New York – out of the match, the door has been left ajar for the likes of Sinner and Medvedev.
Medvedev, the winner of the 2021 US Open, confirmed resilience to come back out on high of a topsy-turvy first set in opposition to Cobolli.
Having broke early and held agency on serve to win the second, Medvedev, who is commonly recognized for being hot-headed on court docket saved his cool in a back-and-forth third-set tussle and emerged triumphant after breaking for the fourth time.
The 28-year-old will proceed his bid for a second Grand Slam title in opposition to Nuno Borges of Portugal, who clinched a surprising 6-7 (5-7) 6-1 3-6 7-6 (8-6) 6-0 comeback win in opposition to 18-year-old Czech Jakub Mensik.
“If I play good tennis I can win the entire thing,” Medvedev mentioned. “If I do not play good I can lose in opposition to anybody. I simply must play my finest and attempt to win.”
Elsewhere, Australia’s Jordan Thompson booked his spot in a Grand Slam final 16 for simply the second time in his profession as he moved previous Italian thirtieth seed Matteo Arnaldi 7-5 6-2 7-6 (7-5).