Both men had to climb off the canvas in an 11-round epic in front of 90,000 at Wembley, but Joshua had the lasting power to pummel Klitschko late on and add the WBA title and less revered IBO belt to his IBF crown.
Klitschko recovered from tasting canvas in the fifth to send Joshua to a first career knockdown a round later, although the Ukrainian veteran could not capitalise and the Brit was able to recover ahead of his late onslaught.
