Billy Joe Saunders' son surprised everyone during his dad's WBO middleweight title fight weigh-in against Willie Monroe Jnr on Friday in London. After the two men had weighed in for the fight, Saunders' son, Billy Joe Jr, stood on the scales between the two men. Monroe reached out to playfully tousle the youngster's hair, only for the boy to react by punching him in the groin. Clearly below-the-belt that one! (Video courtesy: SNTV)