 The Athletics, along with Regensburg Legionäre, is one of the largest clubs in the Baseball-Bundesliga Süd in terms of membership, claiming to have hundreds of active players.The club has played in the Baseball-Bundesliga for more than two decades, winning the German Championship in the 2007 and 2016 season.The Mainz Athletics played their home games at Sandflora Ballpark between 1988 and 2010.