So now we can reflect on his career. Was it what we expected? Or did he fail miserably?
I think that most would say he may have not lived up to his own expectations, but exceeded most of ours at the beginning of his run. Honestly, who can say that they thought that Brock Lesnar would ever be champion in the premier mixed martial arts organization in the world?
You really have to think about what he did to realize how amazing it was. Dave Bautista thought about it, but couldn't do it. Bobby Lashley is frankly failing miserably at it. But Brock not only succeeded, he excelled. He became one of, if not the biggest pay-per-view draw in the sport. Sure, initially it was the "James Toney effect".
People really wanted to see him fail, but his wrestling pedigree is real. He used that to subdue his opponents and make his venture into the game a success.
How could a former champion who only had eight career fights against some of the best in the world not be considered a success? There's no shame in falling to Alistair Overeem, Cain Velasquez and Frank Mir. All have been, or possibly will be UFC Champions.
If those are the only losses in a career in which you started a novice and fought a UFC Hall of Famer in your fourth fight, you've done more than anyone could have imagined.
Brock was far from a bust, he succeeded. And if this truly is it for him, he has a career he can be proud of.