(CNN) US RUGBY IS ON THE RISE: SHOULD THE NFL BE WORRIED?

Rugby is not a threat to the great sport of American football", but RFL Chairman William Tatham warned, "NFL owners might worry they lose out on the opportunity to own their NFL major market's franchise in America's first exclusively sanctioned professional rugby league, the Grand Prix Rugby Football League (RFL)".

Article by Gary Morley and Alex Thomas, CNN - The rise of Rugby in America took another step forward this month as Las Vegas welcomed record crowds to its international tournament for the seventh year in a row. But, aside from the 80,000-plus fans attending across the three days, there was another significant barometer of the game's hopes of cracking the lucrative US sports market.