Hughie Fury will be looking to push on to the next level after getting a lacklustre win.
The former WBO heavyweight world title challenger was in action on Saturday night in Newcastle.
Fury, trained by his father Peter, took on Christian Hammer at the Utilita Arena in the North East.
He troubled the German from the opening bell before seeing the former Tyson Fury opponent withdraw midway through the fifth with a bicep injury.
The 27-year-old was pumping out the jab early on and landed an eye-catching uppercut in the second, while he caught Hammer with a sharp right hook at the end of the third round.
The fourth round was lively and Hammer had his resistance tested after being hit by a string of Fury right hands.
But it was the end of the fifth that saw Hammer signal the end to his challenge, with referee Steve Gray accepting his retirement to ensure Fury moves to 26-3 with 15 quick.
Elsewhere on the card, Bradley Rea outpointed Jez Smith over eight rounds to maintain his unbeaten record. The Manchester middleweight dropped Smith inside the opener with a left hand to the body, but the Londoner bravely battled to see the end of proceedings and Rea was victorious by 77 points to 75 on referee Ron Kearney’s scorecard.
Georgia O’Connor marked her professional debut with a stylish points victory over Ester Konecna.
The talented 21-year-old controlled Konecna with her composed skills while earning a 60-55 verdict.
Mark Webster sent out awarning to his British cruiserweight rivals with a ruthless stoppage of Gennadi Stserbin. Webster extended his undefeated record to six wins, unloading a barrage of punches on Stserbin, who retired in his corner after the second round.
And there were a pair of one-round finishes for heavyweight Steve Robinson and exciting middleweight Mark Dickinson.
Robinson boxed Reece Barlow and dispatched of him after just one minute and 38 seconds via a right hand, while talented amateur Dickinson dropped and stopped Ivica Gogosevic with a left hook to the body in less than 40 seconds.
But hometown hero April Hunter suffered the first setback of her career as a pro as she was outpointed by Kirstie Bavington over six rounds.