WBO world middleweight champion Billy Joe Saunders reacts to his young son hitting his opponent Willie Monroe at their weigh-ins.

The boxing world saw perhaps a first in world title fight weigh-ins today when Billy Joe Saunders’ young son let fly with a right hook into the balls of American Willie Monroe Jr, followed by an attempted kick.

Those in attendance were laughing but Monroe’s team could be clearly heard shouting straight after:

“That’s bull****!”

Indeed, many fight fans online have taken issue with the behavior in a story which seems to have taken on a life of it’s own so far.

The father of the boy and world champion Billy Joe Saunders has now given his opinion on what took place:

Monroe could be seen putting his hand on top of Saunders’ son’s head in a seemingly friendly manner prior to the boy letting fly here.

Some of the reactions so far from fight fans today have been mixed to say the least: