Anthony Joshua staked his claim to the best fighter in the world today, knocking out Wladimir Klitschko to become the new WBA (Super) and IBO heavyweight champion.

Joshua, who improved to 19-0 with 19 knockouts, entered the bout at Wembley Arena in England with the IBF title already around his waist. He handed Klitschko just the fifth loss in his legendary career that includes 64 wins.

After a back-and-forth battle, it was Joshua who found a home in the 11th. He connected with a big right hook and landed a flurry that Klitschko survived. After another hook, an uppercut spelled the end for Klitschko.

Klitschko made it back to his feet with a five-count, only to be planted once more. After Klitschko made it up once more, Joshua teed off on him in the corner and the ref stepped in at 2:25 of the second-to-last round.

Earlier in the fight, Klitschko knocked Joshua down for the first time in his career. This was also the first time Joshua has gone past the seventh round. Both boxers won gold medals at the Summer Olympics, with Joshua claiming his in 2012 and Klitschko in 1996.

Former heavyweight champions Evander Holyfield and Lennox Lewis were both in attendance, while WBC champion Deontay Wilder watched ringside.