Even though most British fans were confident in Joshua winning, despite some doubts elsewhere, nothing could prepare supporters for the emotion when Joshua secured victory with an incredible uppercut.
It was a fight of epic proportions, one that drew praise from some of the greats.
As well as from the rest of the sporting world.
And the rest of Twitter.
Read the full article on eurosport.co.uk: 'A superstar is born!' - Best Tweets as Joshua defeats Klitschko