The Dallas Mavericks are a professional basketball team and a member of the National Basketball Association. The Mavericks, or Mavs, joined the NBA in 1980 as an expansion team. Led by superstar Dirk Nowitzki, the Mavs won their first NBA championship following the 2010-11 season. The Mavericks are currently members of the Southwest Division of the Western Conference. Their rivals include the San Antonio Spurs and Phoenix Suns.