The Fox 40 Whistle has become the whistle of choice for the National Basketball Association (NBA), the National Collegiate Athletic Association (NCAA), the National Football League (NFL), the Arena Football League (AFL) and the Canadian Football League (CFL). It was heard above the crowd at the 1988 Seoul Olympics and 1996 Atlanta Olympics, and was the whistle of choice in the 1990 World Cup Soccer held in Italy, the 1994 World Cup held in the United States and the 2002 World Cup in Japan and Korea. Fox 40 Pealess Whistles have since been used in numerous world-class tournaments, leagues and every Olympics. Fox 40 is now designated as the Official Whistle & Coaching Board of the NHL and Canada Basketball. Fox 40 is also the Official Whistle of USA Wrestling.