When did the conference the members of the Fresno State–San Diego State rivalry are both part of begin operations?
Mountain West Conference The Mountain West Conference (MW) is one of the collegiate athletic conferences affiliated with the National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision (FBS) (formerly I-A). The MW officially began operations in July 1999. Geographically, the MW covers a broad expanse of the Western United States, with member schools located in California, Colorado, Hawaii, Idaho, Nevada, New Mexico, Utah, and Wyoming. Craig Thompson has served as Commissioner of the MW since its founding in 1999.
Golden State Athletic Conference The Golden State Athletic Conference (GSAC) is a college athletics conference in the National Association of Intercollegiate Athletics (NAIA). The conference commissioner is Mike Daniels. Conference leadership is shared among the member institutions. All of the members of the GSAC are Christian colleges located in California and Arizona. Conference teams have won 20 national championships.