In association football, a substitute is a player who is brought on to the pitch during a match in exchange for a player who is currently playing. Substitutions can be made for many reasons. Sometimes, they are made to replace a player who has become tired or injured. Substitutes can also replace a player who is playing poorly, or can be for tactics. For example, substitute strikers can be brought on for defenders if the team needs to attack. The term "super-sub" refers to a substitution made by the manager that saves the game. This is generally done by scoring one or more late goals. The goals can equalize or win the team the match.