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.
Mountain States Conference The Mountain States Conference, also known as the Skyline Conference, was a college athletic conference based in the Western United States. The league was established in 1938 when the seven charter members (see below) pulled out of the Rocky Mountain Athletic Conference.