Law Information

AYSO games follow FIFA (international soccer) Law very closely, with only a few changes to adapt to AYSO's philosophy (e.g. controlled substitution to ensure that "everyone plays") and, at the youngest age levels, to adapt the game to the physical and mental maturity of the players. All AYSO referees should have a copy of the current AYSO edition of The Laws of the Game,which contains both the FIFA Laws and AYSO's modifications to them. Ask the referee administrator for a copy.

National AYSO also provides a number of referee resources.

AYSO Rules of Competition

Most of AYSO's Rules of Competition and modifications to the Laws are printed into the AYSO edition of The Laws of the Game (and are also included in the Referee's Handbook). The full text of AYSO's Rules and Regulations and Policy Statements are on the national website.

Age Differences

Players 8 and older (in the U9 division and above) use the full FIFA Laws (although U9 and U10 children play on 7 player teams on reduced size fields). Under 8 players play on 4 player teams on an even smaller field, with a simplified set of Laws. Under 6 games are not formally officiated at all but are facilitated by their team coaches.

U9 and above games are run using the diagonal system (center referee plus two assistant referees).

U7 and U8 Laws for Region 109

Most AYSO regions adapt the Laws significantly for Under 8 players. Unfortunately, such ad hoc changes can leave players, coaches and parents without a single reference source as to what the rules actually are. Some years ago, Menlo Park drafted a self contained set of Laws for Under 8 games in this region. They can also be found in the Referee's Handbook.

U9 and U10 Rules and procedures

U9/10 games use the full FIFA Laws with some changes. Since a full sized field is a bit of physical challenge for children this age, U9/10 games in Region 109 are played on reduced size fields (roughly 60% of full size). To keep everything to scale, all distances in the Laws of the Game will all be reduced proportionately (for example, 10 yards to 8 yards). Slightly smaller goals are also used.

Also proportional to the reduced size fields, U9/10 teams consist of 7 players. This allows players to get more "touches" on the ball than they would in 11 player teams. A match may not start if a team consists of less than 5 players.

Referee Assignment in U9/10

U9/10 games are typically refereed by parent volunteers from each team. However, these games are played using the full laws (with some minor changes), rather than the abbreviated ones used in U7 and U8. It is important that the referees at this level actually know the full laws, otherwise the children get very confused. We strongly suggest that each team provide at least one certified Regional referee

Since most parent referees will occasionally be unavailable for a home game (e.g. for travel, illness, etc.), it is therefore recommended that each team obtain (i.e. train) two referees, so they have a backup. Extra officials can then be Assistant Referees. For more details please contact the Regional Referee Administrator

Substitution Rules for Under 19 and Under 16 Games

Unlike many youth soccer leagues, AYSO limits substitutions to make it practical for the referee to ensure that "everyone plays" at least half the game. Substitutions are therefore only allowed at half time and at two substitution breaks midway through each half. However, in U16/U19 games, free substitutions are allowed in the fourth quarter, provided that the players involved have already played at least half the game.  

Player Equipment

Both The Laws of the Game and the AYSO Rules of Competition prohibit players from wearing anything that, in the opinion of the referee, may be dangerous to either themselves or another player. Because disputes about the danger of specific items keep arising, Region 109 has issued a list of prohibited items . Items not on this list may also, of course, be deemed dangerous by the referee on the field. 


Last updatedMay 2010