Canada's perceived superiority in box lacrosse took a wallop Saturday when a big, aggressive U.S. team battled its way to a 21-16 victory in the inaugural Heritage Cup game. The Americans habitually win the world field lacrosse championship, which is contested every four years, but Canadians are considered best in the indoor version of the sport. The first world boxla tournament will be staged next May in southern Ontario. Saturday's high-scoring contest was played in front of 3,500 at the Hershey Centre. Jake Bergey and Mike Regan led the way for the Americans with five goals each, Kevin Finneran had four, Jay Jalbert three, Tim Soudan two, and Jamie Hanford and Tom Ryan one each. Roy Colsey had five assists. For Canada, Dan Stroup, John Grant and John Tavares scored three each, Colin Doyle and Tracey Kelusky two each, and Jim Veltman, Gary Gait and Dan Teat one each.