There is no 'standard' size for a sup'air field yet, as far as i know. The Millennium fields are not less than 10m x 6m for each player on a team. So the overall minimum size would be approx 70m x 42m, as it's a 7-man format. There are also to be not less than 2.5 bunkers on the field for each player on a team. I think one UK series rules (can't remember which... or maybe Millennium 2k2?) state that the width of a field must not exceed thirds of it's length , but 2K3 Millennium fields are just deemed to be 'longer then they are wide'. Hope that helps a bit! Get measuring!!