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Referee placing the ball while opponents line up for a face-off. |
During play, teams may substitute players in and out freely. Sometimes this is referred to as "on the fly" substitution. Substitution must occur within the designated exchange area in front of the players bench in order to be legal. The sport utilizes a shot clock and the attacking team must take a shot on goal within 30 seconds of gaining possession of the ball. In additional, players must advance the ball from their own defensive end to the offensive half of the floor within 10 seconds (8 in NLL).