Klitschko Beats Pulev: The Pictures You Need to See

So much for Kubrat Pulev posing a serious threat to Wladimir Klitschko's heavyweight titles.

Pulev, an unbeaten Bulgarian billed by some as the most serious challenger Klitschko has faced in years, lasted only five rounds before Klitschko knocked him out with a left hook, extending his eight-year reign as the world's top heavyweight.

Click through for a photo gallery from the bout. (All photos are by Getty Images.)