Phoenix Municipal Stadium is a baseball stadium, located in Phoenix, Arizona. It is often referred in short as Phoenix Muni. The stadium was built in 1964 and holds 8,775 people. It is currently the home to the Arizona State Sun Devils baseball program, having relocated to Phoenix Municipal Stadium at the start of their 2015 season. It is the former spring training home to the Oakland A's, having played their home games from 1982 to 2014. The San Francisco Giants held spring training at the ballpark from 1964 to 1981, when they moved to Scottsdale Stadium.

The Oakland Athletics are an American professional baseball team based in Oakland, California. The Athletics compete in Major League Baseball (MLB) as a member club of the American League (AL) West Division. The team currently plays its home games at the Oakland Coliseum, with plans to temporarily move to Sutter Health Park in West Sacramento, California, for the 2025–2027 seasons, prior to their permanent move to Las Vegas. The nine World Series championships, fifteen pennants, and seventeen division titles that the A's have won throughout their history is the second-highest in the American League after the New York Yankees.