[2] It is the spring training workout facility for Major League Baseball's Athletics.

It is also the year-round home for the Athletics' minor league training and player development operations, the home ballpark of the Arizona League Athletics, and the spring training home for the Athletics' minor league affiliates.

[3][4] The Chicago Cubs used the baseball fields and training facility in the same capacities from 1997 to 2013.

[3] The building's exterior and interior were remodeled to reflect Oakland's green and gold color scheme.

[3] The playing fields, pitcher's mounds, and batting cages were also improved to meet the team's needs.