Match Report | 2024 US Open: Jannik Sinner overcomes slow start to defeat Mackenzie McDonald

Jannik Sinner recovered from a shaky start to defeat Mackenzie McDonald 2-6, 6-2, 6-1, 6-2 in his US Open debut. The World No. 1 appeared troubled after the first set but eventually found his form, securing a decisive victory over the American player.

Pre-match tensions were high for Sinner, given that this was his first match since the doping controversy, where the ITIA declared him innocent. Despite the background, Sinner struggled initially, with just 58% first serves and 14 unforced errors—almost two per game.

McDonald (No. 140) capitalized on Sinner's early struggles, earning a quick break in the first game. Although Sinner levelled at 2-2, he continued to falter with his serve and return. McDonald took advantage, securing two consecutive breaks to win the set 6-2, delivering an unexpected result on Arthur Ashe Stadium.

The second set started ominously for Sinner as McDonald achieved a third consecutive break and took the lead. However, a pivotal moment occurred in the following game. After 7 deuces and four break points, Sinner regained his composure and turned the match around.

The 23-year-old significantly improved his serve and cut down on unforced errors. He exploited McDonald's weaknesses and took control of the match. Sinner secured another two breaks in the second set, closing it out 6-2 with clear dominance over the local player.

Sinner’s peak performance was evident in the third set. After both players held their serves to 1-1, Sinner won the next 5 games, conceding only 3 points. He closed the set 6-1, winning 78% of the points played (89% on his serve and 64% on McDonald’s serve).

The one-sided dominance continued into the fourth set. Sinner won 13 consecutive points, taking a 4-0 lead after two breaks. McDonald struggled to respond, managing to defend a couple of service games but ultimately falling 2-6, 6-2, 6-1, 6-2.