Brock Lesnar would either break Wladimir Klitschko's Legs or Klitschko would knock Lesnar out first.
Depends, in a boxing match Klitschko wins by KO most likely, in a wrestling or MMA fight Lesnar wins.
If your asking in a street fight scenario I'm going to go with Lesnar as MMA is more of a street fight then boxing.
They are both excellent at what they do, two of my favorite to watch in WWE and UFC
Klitschko would knock him out. Lesnar has a glass jaw.
Lesnar wakes up in a hospital, asking what happened.
boxing is boring. klitschko brothers killed heavyweight boxing. boring boring boring