Alexander Zverev, the world number one and French Open champion, defeated Lorenzo Sonego in a five-set match to advance to the second round of the US Open. ^[1] Alexander Zverev defeated Lorenzo Sonego in the first round of the US Open in a five-set match lasting approximately four hours and 52 minutes. ^[2] The match concluded with a score of 6:4, 3:6, 6:7 (7:9), 7:5, 6:4, ending well past midnight. ^[3] Zverev, who has Type 1 diabetes, checked his blood sugar levels multiple times during the match and appeared to struggle with energy levels in the third set. ^[4] Lorenzo Sonego, a 31-year-old Italian ranked 89th, led 2-1 in sets and 5-4 in the fourth set but could not convert the lead into a win. ^[5] The match ended with a score of 6-4, 3-6, 6-7, 7-5, 6-4 after nearly five hours, concluding around 2 a.m. local time in New York. ^[6] Heavy rain caused significant delays and cancellations, including the suspension of matches on the outdoor courts. ^[7] Zverev, with his back against the wall, played an offensive and aggressive game at a level that world No. 89 Sonego could not match. ^[8] Gael Monfils defeated Adolfo Daniel Vallejo 2-6 6-1 6-2 6-0 to keep his farewell Grand Slam campaign alive. ^[9]