Briton Ben Whittaker grabbed Ezra Arenyeka by the throat after being goaded at the weigh-in for Saturday's light-heavyweight contest in London.
The Olympic silver medallist retaliated after Arenyeka pointed his finger towards Whittaker’s face in the head-to-head.
As security intervened, Arenyeka then threw women's underwear at Whittaker.
"At the end of the day, he's coming with his energy," a dumbfounded Whittaker, 27, said.
"It's all nervous energy. Tomorrow's the day. Tomorrow's judgement day."
Nigeria-born Arenyeka weighed in exactly at the 12st 7lb limit with Briton Whittaker five ounces over, before matching his opponent's weight in a second weigh-in moments later.
The bout takes place on the undercard of Chris Billam-Smith’s WBO cruiserweight title defence against Richard Riakporhe at Selhurst Park.
Billiam-Smith, 33, cut a subdued figure on the scales compared with Riakporhe, 34, as both men tipped the scales at 14st 4lb.
