Jannik Sinner and Carlos Alcaraz have wasted no time making history against one another, and the ATP No. 1 has now made a stark admission about his closest tennis rival

Following Gauff on the P&G Center Court was the men’s No. 2 seed, Carlos Alcaraz. The Spaniard looked in need of an island, but not a loving one, after he struggled with 33-year-old Bosnian veteran Damir Dzumhur. While Gauff was chirping away in press, Dzumhur was taking the second set from Alcaraz, who did, finally, win 6-1, 2-6, 6-3.

Carlos Alcaraz fought through a second-set slump to post a "rollercoaster" 6-1, 2-6, 6-3 victory over Damir Dzumhur in his opening match Sunday at the ATP-WTA Cincinnati Open.- Gauff battles through - In the women's draw,