The cheap shots have started ahead of the Fight for Life charity event as the mostly amateur boxers compare biceps after 12 weeks of training.
The 12 boxers, made up of former and current rugby league and rugby union players, weighed in at SkyCity's Nations Clubrooms yesterday morning. They will compete in a battle of the codes tonight at Trusts Stadium in West Auckland.
While some boxers had sweated and dieted to lose weight - former New Zealand Warrior Jerry Seuseu shed 13kg - others were a little concerned about their lightness.
All Black Liam Messam weighed in 11.8kg lighter than his opponent Wendell Sailor, a weight gap which led him to suggest he might head to KFC to make up the difference.
The biggest cheer of the weigh-in was for ex-All Black Carlos Spencer, possibly because of his sculpted, Johannesburg-tanned torso.