Brock Lesnar recently turned 40 years old, and for most pro sports unless you are a golfer, retirement is in your near future. But not for Brock. He seems to be getting better and stronger every time he steps in the ring and has found success in both the WWE and the UFC. Recently fans challenged Brock and Jon Jones to fight in which both seemed to agree, Who do you guys think would win the fight? Let us know in the comments below.