The North American Challenge (NAC) is a bowls matchup between Canada and the United States of America.  The NAC is played bi-annually in even years with locations alternating between the USA and Canada. First being held in 1995, the tournament is sanctioned by World Bowls as an international event. Each country fields two teams: a Jarvis team and a Folkins team. Each team consists of five male and five female athletes. The teams are named after Dick Folkins, a legendary American bowler, and Graham Jarvis, a long time international contender for Canada.