Daniel Dubois knocked out Trevor Bryan in the fourth round to set up a potential fight with Anthony Joshua.
The British heavyweight is now the mandatory challenger to the winner of Joshua's rematch with Oleksandr Usyk which is due to take place in Saudi Arabia in August. He also picked up the lightly-regarded WBA 'regular' world title, the inferior version of the belt held by Ukrainian Usyk.
"I've worked so hard for this, it's unreal," said the winner. "Now it's official, now I can make some massive fights in the future; I'm so grateful." Asked if he would fight domestic rival Dillian Whyte, who lost to Tyson Fury in April, Dubois added: "Definitely, bring them all on. Now I'm ready, this will set me up and I'll instantly become a better fighter for this. In my mind I was the favourite and no disrespect to anyone but Trevor's '0' had to go.