While appearing on ESPN to announce his opponent for UFC 200, which is Mark Hunt by the way, Brock Lesnar also discussed how he convinced Vince McMahon to go along with his appearance at UFC 200:

"I said, ‘Listen, old man, we can do this the hard way or the easy way and I said, ‘Do you wanna arm-wrestle for it?’ He was like, ‘yeah, what the hell.’ So, I ended up beating him and here we are.”

I know Vince is strong for his age, but did he really expect to win?

He then discussed how it was win for the WWE, as it'll help add legitimacy to the brand, while it's also a win for the UFC. It's definitely gonna be an interesting few months for the Brock Lesnar, the WWE and the UFC.