Unbeaten Terrence Crawford successfully defended Shaun Porter in the 10th round of the WBO Welter Championship on Saturday.
Crawford, 34, was knocked on twice by Porter’s father and coach, Ken Porter, before stepping in to stop the fight.
He first cut Crawford Porter on his left side with a knee-jerk key.
It was more than 21 hours before the 1st round.
Crowford improved to 38-0 with 29 wins, while Porter suffered his fourth defeat of the season and lost 31-4-1 with 17 KOs.
The first nine rounds of the battle were approaching, with both warriors accidentally having their forearms cut off.
Crawford extended their long-distance winning streak to 16-0 in the World Cup.
Crawford is considered one of the best pound-to-pound boxers in the world.
He was a super lightweight champion, holding a lightweight belt and is now 6-0 at Welter Scale with six balls.
Crawford has the smallest of the four major Welter weight articles.
Calling Ellioll Spain on Saturday holds the IBF and WBC belts and Jordanis Ogas holds the WBA title.