Five spring training sites in Arizona and one in Florida are shared by two MLB teams. Many of the stadiums are used by minor league teams, once spring training ends. Salt River Fields at Talking Stick in Scottsdale, Ariz.(home of the Arizona Diamondbacks and Colorado Rockies) is the first major-league baseball complex built on tribal land.

Darron Cummings/AP
Members of the Arizona Diamondbacks stretch before a spring training baseball workout Saturday, Feb. 25, at Salt River Fields in Scottsdale, Ariz.