A complete roster of players and subs must be presented to the referee before the game starts. The referee must be notified before a substitution can occur. Any player ejected from the game may not be replaced. The usual uniform of the soccer player is a jersey, shorts, calf socks, shin guards and shoes. Nothing potentially injurious to another player may be worn.
Cleats are normally rubber, plastic, aluminum or leather.
The goalkeeper must wear a different color than the other members of the team. The referee is in charge of all game activity and is to make sure each team abides by the rules. His decisions are final. It is the referee's responsibility to keep the game clock, stop for injuries, and remind players of proper game conduct. He can eject players who show unsporting conduct.