Rocky Fielding upset the odds to stop Tyron Zeuge inside five rounds and become the WBA Regular super-middleweight champion in Germany.
The unbeaten Zeuge had the crowd and three world title defences behind him inside the Baden-Arena Offenburg, but the German fatigued quickly.
Fielding could sense Zeuge was fading inside the fourth round despite not setting an intense pace and hurt his opponent before going for the kill late in the fifth.
Zeuge ate up several uppercuts and stumbled backwards, clearly looking unsettled on his feet.
Fielding fired off another uppercut and then a succession of left hooks to the body before the 26-year-old collapsed onto his knee.
The referee began the count, but Jurgen Brahmer in Zeuges corner saw his fighter was in serious trouble and threw in the towel.
An emotional Fielding lept over the ropes to celebrate with his team and the Liverpudlian thanked his coach after the biggest win of his career.
It feels amazing, said Fielding. The fact Ive come to his backyard and stopped him. Ive been listening to my trainer Jamie Moore and everything he said was on point.
I broke him down and Jamie said lets see where he is after six.
This was my night tonight, I knew that it was a long road back without winning this. Ive come on a long way in the last few years, I have the fear-factor back and I need that to win, I had it big time tonight and produced the goods.
Ive had a lot of support back home and I cant thank the fans that have come out enough. Its been a great week and its just ended in great style.
I saw he was tiring early and he wasnt firing back at me. I countered him and made him miss, and I felt really fit in there.
Id love to defend it in Liverpool – theres a rematch clause but I cant see him wanting to fight me again.
Ill have a rest and get back to the family, well sit down with the team and well see what options are out there, but Im really thrilled and cant wait to build on this.
Three years ago Fielding suffered a damaging loss to local rival Callum Smith and had had to rebuild his career since then.