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Rugby is what they call a "gentlemen's sport". It might seem like there's a lot of banging and tackling, but its also a very fair game. If a referee can't see what happened, they turn to video referees. Now, a new scientific paper says that sheer physical mass may have a lot to do with winning the game.

Rugby teams are divided into two groups, the forwards and the backs. A new piece of research in the British Journal of Sports Medicine, the sheer size of the team members has a lot to do with their victories, as well as their experience.

Researchers compiled data on 20 years of Rugby World Cup players accumulating 2692 athletes and looked at their height, weight and experience in the tournament. They found there was a distinct physical attribute that gave them the advantage which translated to more victories. The more successful players weight 2kg above the counterparts, especially the forwards. Height made a difference for the backs, with the more advantageous ones being 2cm taller.

So bigger means badder and more awasome. From 1987 to 2007, the average player was heavier by more than 6.5 kg and the back by a centimeter in height.

Of course, experience weighs in a lot too. Researchers found that the teams who had more previous players that participated in the tournament before tend to perform better as well.