High Quality Content by WIKIPEDIA articles! Cisco Field is a proposed ballpark in San Jose, California. It is the proposed new home of the Oakland Athletics; however, the opening date has yet to be determined. It will be replacing their current home at O.co Coliseum, where the team has resided since their move to California in 1968. This stadium would mark the first time that the A`s franchise has received a brand new stadium in which to play since the completion of Shibe Park in 1909.