Report: McMahon dove off tower to convince Gronkowski it was safe

It apparently took some convincing from Vince McMahon before Rob Gronkowski agreed to dive off the top of a tower at WrestleMania 36.

Gronkowski was "terrified" of the dive, a WWE source said, so the 74-year-old McMahon did it himself to show it was safe, multiple people within the organization told Sean Ross Sapp of Fightful. Even then, Gronkowski was reportedly still reluctant.

WWE used a low angle for the segment because Gronkowski bent his knees and nearly fell off the platform "like a toddler jumping into the pool for the first time," an insider said.

Gronkowski won the WWE 24/7 championship at WrestleMania 36 after diving onto a group of wrestlers that included his friend Mojo Rawley. Although he's returning to the NFL this season, Gronkowski said he's prepared to defend the title.