NASL Conference) Virginia Beach Mariners (2005–06) †The Austin Aztex have been awarded a USL Pro franchise and will begin play in 2015 in that league. See also A-League League champions / top goal scorer Regular season champions (Commissioner’s Cup winners) Most successful clubs League average attendance All-time USL leaders Note: includes stats from the old A-League See also Sports attendances Notes (*) Puerto Rico can qualify for the CFU Club Championship via a domestic cup competition. References External links Official site (archived) Unofficial fan site Fir Defunct soccer leagues in the United States Defunct soccer leagues in Canada