The 21-year-old is 1-4 against Top 10 opponents this season, with his lone victory coming a couple weeks ago over world No. 5 Daniil Medvedev at the Laver Cup. Shelton is bidding to become the first player to oust Sinner before the quarterfinal stage of an event in 2024.
“Obviously, huge serve and huge forehand. He has improved a lot, so hopefully I will be ready,” Sinner said when asked about the potential matchup with the No. 16 seed Sunday.
Meanwhile, seventh seed Taylor Fritz will meet 12th seed Holger Rune for a quarterfinal berth after both joined Shelton in advancing. Fritz defeated qualifier Yosuke Watanuki, 6-3, 6-4, while Rune secured a 6-4, 7-5 victory over 33rd seed Jiri Lehecka.