SummerSlam was promoted by WWE in 2015.
 In turn, the 2021 SummerSlam became the highest-grossing SummerSlam event of all time
 After the promotion resumed live touring with fans in July 2021, that year's SummerSlam was promoted as the "biggest event of 2021" due to WrestleMania 37 having to be held at a reduced venue capacity

