Logan Paul and Dillon Danis came to blows at the final press conference ahead of their clash MF & DAZN: X Series 10.
The rivalry between the pair has got tense and personal, and now differences will finally be settled at Manchester's AO Arena on Saturday night.
As expected, Paul and Danis engaged in verbal sparring in front of the world's media on Thursday, but when the two came together for a face off, Paul threw his microphone at his rival's leg.
This led to a brawl on stage which saw Danis strike Paul with an object before they could be separated.
As the two fighters were being led away by security, Paul could be seen clutching his face with some claims that Danis drew blood.
It is still unknown as to whether this could affect Saturday's after promoter Mams Taylor was unable to give an update on Paul's condition.