By Tom Greenaway At 21, Jack Dempsey has the rugby world at his feet. Having recently signed on with the Waratahs until the end of 2017, the hard-nosed back rower from Saint Ignatius College in Sydney is quickly rising as one of the top developing prospects in Australian rugby. “It’s huge to be honest (talking about his contract), this year was my first full year training with the big boys. Taking the field with those guys was really a dream come true,” he told Rugby News. After earning three Super Rugby Caps last season, the young flanker is bidding to refine his game with the North Harbour Rays in this years NRC. “Jack is an all round athlete,” Rays head coach Geoff Townsend said. “He can carry and he can make tackles and be on ball. He can play pretty much at six, seven or eight, which is very handy.” As the nephew of former Wallaby and fellow back rower Tony Dempsey, rugby was always a hot topic for Jack growing up. “When someone in your families gone all th