O.co Coliseum – also known as Oakland-Alameda County Coliseum, and commonly The Oakland Coliseum or The Coliseum; and formerly known as Network Associates Coliseum, McAfee Coliseum, and Overstock.com Coliseum – is a multi-purpose stadium, located in Oakland, California, USA, in the Coliseum Industrial area. It is the only remaining multi-purpose stadium left to serve as a full-time home to both a Major League Baseball team (the Oakland Athletics) and a National Football League team (the Oakland Raiders). The Coliseum was also home to the San Jose Earthquakes, of Major League Soccer, who used the stadium for several larger attendance games, during the 2008-2009 seasons. It also was the host of some games of the 2009 CONCACAF Gold Cup.
The Coliseum contains 6,300 club seats (of which 2,700 are available for Athletics games) and 143 luxury suites (of which 125 are available for Athletics games), with a variable seating capacity of 35,067 for baseball, 63,132 for football, and either 47,416 or 63,132 for soccer, depending on its configuration.
It is part of the Oakland-Alameda County Coliseum complex, which consists of the stadium and neighboring Oracle Arena.