On the night of 29 April 2017, at Wembley Stadium, Anthony Joshua knocked down and defeated the Ukraine's former world heavyweight champion, Vladimir Klitschko.In doing so, he added the WBA and IBO heavyweight titles to the IBF belt he already held. That bald statement of fact does little justice to what proved to be one of the finest heavyweight contests of all time, in which a brilliant but relatively inexperienced fighter took on, and eventually defeated, one of the finest boxers of his or any other age.It was a twelve-round fight before a record post-War crowd, and for eleven of those rounds it could have gone either way; indeed, in Round 6 it looked as though Joshua was finished when a massive right hand from Klitschko sent him to the canvas.