7 and eventually lead to their repeal. On June 10, 2010, the Buffaloes announced that they would join the Pacific-10 Conference, soon renamed the Pac-12 Conference, in all sports beginning on July 1, 2011. Varsity sports The University of Colorado was a member of the Colorado Football Association in 1893, and became a charter member of the Colorado Faculty Athletic Conference in 1909, which changed its name a year later to Rocky Mountain Faculty Athletic Conference. Colorado left the RMFAC to become a charter member of the Mountain States Conference (a.k.a. Skyline Conference) in 1938. CU joined the Missouri Valley Intercollegiate Athletic Association in 1947, then commonly known as the Big Six, changing the common name to the Big Seven. In 1958, the conference added OSU to become the Big Eight Conference. It remained the Big 8 until 1996, when it combined with four member schools of the defunct Southwest Conference (Texas, Texas A&M, Texas Tech, and Baylor) to create the Big 12 Conference. On July 1, 2011, the school joined the Pac-12 Conference, along with Utah. A total of 12 of CU's 17 varsity sports compete in the Pac-12, except the ski teams, indoor track & field teams and the lacrosse team. The ski teams participate in the Rocky Mountain Intercollegiate Ski Association (RMISA), of which it has been a member since 1947, along with fellow Pac-12 newcomer Utah. The indoor track & field teams participate in the Mountain Pacific Sports Federation (MPSF) as the Pac-12 doesn't sponsor indoor track. Women's lacrosse was added in the spring of 2014; that team competed in the MPSF until the Pac-12 Conference added women's lacrosse as a sport for the 2018 season. Colorado is the only Pac-12 school and one of only four Power 5 schools that do not sponsor baseball, along with Iowa State, Syracuse, and Wisconsin. CU does not have a women's softball program, one of three Pac-12 members (USC, Washington State) opting not to participate. Football The Colorado football program is 16th on the all-time NCAA Division I win list and 22nd in all-time winning percentage (.614). Since Folsom Field was built in 1924, the Buffaloes have been at home. The Nebraska game in 2006 was CU's 1100th football game. Bill McCartney is the most famous head coach, leading Colorado to its only national championship in 1990. Current head coach Deion Sanders was approved by the university's board of