Jake Paul defeated Tyron Woodley via split decision to extend his unbeaten record to 4-0 in Cleveland.
It is the first time Paul has been taken the distance having previously won all of his previous fights inside the opening round, including a victory over Ben Askren.
After an impressive third round, which saw Paul land a left hook followed by an uppercut, the "Problem Child" had less success in the fourth.
The YouTuber got rocked a heavy right hand by Woodley only to remain standing on the canvas because of his foot being caught on the middle rope.
The referee did not deem it is a knockdown for the former UFC welterweight champion.
Both fighters were fatigued by rounds six and seven but it was Paul who looked the busier although not many of his punches landed on Woodley.
The judges scored the fight 77-75, 75-77, 78-74 to Paul, the hometown fighter in Cleveland.
"He has been boxing, striking, for 20 years. I've been doing it for three years," said Paul on BT Sport Box Office.
"It was tougher than I expected. He is a tough opponent. He put up a good fight.
"He hit me with one real shot in the whole fight."Despite contemplating his boxing future, Tommy Fury is a possible opponent for Paul next, who overcame Anthony Taylor on the undercard.
Woodley said on BT Sport Box Office: "Me and Jake need to run it back. I want a rematch. I felt like I won.
"I hit him and the ropes held him up. I landed more power shots."
"If you get a tattoo 'I love Jake Paul' then we will run it back," Paul said.
Woodley agreed: "You bet! Make the bet!"
Paul replied: "Get the tattoo and we will run it back. I've got a tattoo artist here!"
"He needs to get a tattoo quickly or we will find another opponent. Put it on his Instagram. A permanent tattoo. Then we can talk about it," Paul added.