Joshua Buatsi and Willy Hutchinson had to be separated earlier after the pair got into ahead at the Anthony Joshua press conference.
Joshua takes on Daniel Dubois for the IBF heavyweight title at Wembley as the main event.
On the undercard Buatsi and Hutchinson got stuck into one another earlier:
Quite genuine. No stage props there.
It appears that there is some real needle between the two.
A great match up of two young fighters as part of a great undercard overall.
A crucial one for both of them.
The winner likely will go on to challenge for world honors if not this year next year.
The fight on September 21st at Wembley will be contested for the vacant WBO interim World Light-Heavyweight Championship.