Mod Soccer means modified soccer. The team rosters are smaller; U-8 teams play 5-a-side (4 field players and a goalie). U-9 teams play 7-a-side (6 field players and a goalie.) The fields on which they play are also smaller; 30×40 yd and 40×60 respectively. Games are two 25 minute halves. Goalkeepers are introduced.