professional leagues, Texas has two NFL teams (the Dallas Cowboys and the Houston Texans), two Major League Baseball teams (the Houston Astros and the Texas Rangers), three NBA teams (the San Antonio Spurs, the Houston Rockets, and the Dallas Mavericks), and one NHL team (the Dallas Stars). The Dallas–Fort Worth metroplex is one of only twelve American metropolitan areas that host sports teams from all the "Big Four" professional leagues. Outside the "Big Four", Texas also has a WNBA team, (the Dallas Wings) and three Major League Soccer teams (Austin FC, Houston Dynamo and FC Dallas). Collegiate athletics have deep significance in Texas culture, especially football. The state has twelve Division I-FBS schools, the most in the nation. Four of the state's universities, the Baylor Bears, Texas Longhorns, TCU Horned Frogs, and Texas Tech Red Raiders, compete in the Big 12 Conference. The Texas A&M Aggies left the Big 12 and joined the Southeastern Conference in 2012, which led the Big 12 to invite TCU to join; TCU was previously in the Mountain West Conference. The Houston Cougars and the SMU Mustangs compete in the American Athletic Conference. The Texas State Bobcats and the UT Arlington Mavericks compete in the Sun Belt Conference. Four of the state's schools claim at least one national championship in football: the Texas Longhorns, the Texas A&M Aggies, the TCU Horned Frogs, and the SMU Mustangs. According to a survey of Division I-A coaches the rivalry between the University of Oklahoma and the University of Texas at Austin, the Red River Shootout, ranks the third-best in the nation. The TCU Horned Frogs and SMU Mustangs also share a rivalry and compete annually in the Battle for the Iron Skillet. A fierce rivalry, the Lone Star Showdown, also exists between the state's two largest universities, Texas A&M University and the University of Texas at Austin. The athletics portion of the Lone Star Showdown rivalry has been put on hold after the Texas A&M Aggies joined the Southeastern Conference. The University Interscholastic League (UIL) organizes most primary and secondary school competitions. Events organized by UIL include contests in athletics (the most popular being high school football) as well as artistic and academic subjects. Texans also enjoy the rodeo. The world's first rodeo was hosted in Pecos, Texas. The annual Houston Livestock Show and Rodeo is the largest rodeo in the world. It begins with trail rides from