Famous South Dakota athletes include Billy Mills, Mike Miller, Mark Ellis, Becky Hammon, Brock Lesnar, Chad Greenway, and Adam Vinatieri. Mills is from the town of Pine Ridge and competed at the 1964 Summer Olympic Games in Tokyo, becoming the only American to win a gold medal in the 10,000-meter event. Miller, of Mitchell, is a two-time NBA champion who played college basketball at the University of Florida, leading them to the 2000 NCAA Championship game his sophomore year, and won the 2001 NBA rookie of the year award. Ellis, of Rapid City, played for the University of Florida and four MLB teams before retiring in 2015. Hammon, of Rapid City, played for the WNBA's New York Liberty and San Antonio Silver Stars before becoming an assistant coach for the NBA's San Antonio Spurs in 2014. Lesnar, of Webster, is a former heavy-weight champion in the UFC and WWE. Vinatieri is an NFL placekicker who grew up in Rapid City and attended SDSU.