Brock Lesnar destroyed legit fighters after a few weeks of MMA training ... thats impressive.

Yea he has a background in wrestling, but he was a WWE wrestler (after college) ... for at least 6-10 years.

Dude fought killers from the beginning and he still fought guys like Carwin, Ubereem & Cain while he wasnt 100% healthy.

Greatest part time fighter of all time?