Hohokam Stadium, also known as Dwight W. Patterson Field and formerly Hohokam Park (1997–2013), is a 10,500-seat baseball park located in Mesa, Arizona. The stadium, named for the Hohokam people who occupied the region from approximately AD 1 to the mid-15th century, was completed in January 1997 after the original Hohokam Stadium was demolished. In 2015, it became the spring training home of Major League Baseball's Oakland Athletics. The 2015 stadium and facility refresh for the Oakland A's was led by Populous, and Lloyd Civil & Sports Engineering provided the site civil and ball field design.