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.
Mid-American Conference The Mid-American Conference (MAC) is a National Collegiate Athletic Association (NCAA) Division I collegiate athletic conference with a membership base in the Great Lakes region that stretches from Western New York to Illinois. Nine of the twelve full member schools are in Ohio and Michigan, with single members located in Illinois, Indiana, and New York. For football, the MAC participates in the NCAA's Football Bowl Subdivision.