Jake Paul vowed to avenge his brother's defeat to KSI after telling the British YouTuber "you're next" following his victory over AnEsonGib.
KSI claimed a points win over Logan Paul in November and was called out by his rivals' sibling, who had just scored a first-round knockout in Miami.
Social-media star Jake Paul was confronted in the ring by KSI and there was a heated exchanged between the two.
After telling KSI "you've seen your best friend planted on his a**", Jake Paul said he now wants the opportunity for revenge.
"KSI is next. Where is that p***y at? KSI is going to get clocked next," he said.
"I didn't have to f****** win by two points...You had to beat my bro by a bad call.
"Let's make it happen."
This is fame not clout. VIEW THAT.
— Jake Paul (@jakepaul) January 31, 2020
The younger Paul was emphatic in his victory over Gib, with whom he had exchanged plenty of online barbs, and dropped his opponent twice to secure the stoppage.
"That was lit. I'm taking a moment to soak it in, I caught the boxing bug, I put the work in and I'm in love with this sport," he added.
"My power and speed took him out in the first round.
"I dedicated the last five months of my life to this, I sacrificed everything for this. You all said this was my best competitor and I silenced him in one round."