The World League of American Football (WLAF) was founded in 1990 with support from the National Football League to play professional American football in North America, Europe and later possibly Asia. This came after the NFL had played popular American Bowls in London’s Wembley Stadium and elsewhere since 1986. The WLAF played two seasons with 10 teams in the spring of 1991 and 1992, with the World Bowl as championship games. Rules unique to WLAF included assigning increasing point value to field goals based on distance, and a requirement that at least one player of non-US nationality participate in at least every other series of downs.