In the main event of Night 1 on Saturday, CM Punk defeated Gunther to win the world heavyweight championship. Punk's celebration was short-lived, however, as Seth Rollins returned to cash in the Money in the Bank contract and win the title just minutes after Punk became champion.

Overview Tiffany Stratton retained her World Title, while Gunther, Roxanne Perez, and Raquel Rodriguez lost their titles on WWE SummerSlam 2025's Night 1 While Sami Zayn beat Karrion Kross, Drew McIntyre and Logan Paul beat Jelly Roll and Randy Orton The highlight of Night 1 of WWE SummerSlam was Seth Rollins cashing in his MITB Contract on CM Punk to pull off the Ruse of the Century On the 2nd of August 2025,

SummerSlam 2025 Night 1 witnessed Seth Rollins' shocking Money in the Bank cash-in on CM Punk, stealing the World Heavyweight Title. Roman Reigns and Jey Uso triumphed over Breakker and Reed, while McIntyre and Paul defeated Jelly Roll and Orton.