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In combat sports, a cornerman, or second, is a coach or trainer assisting a fighter during a bout. The cornerman is forbidden to instruct and must remain outside the combat area during the round. In the break, they are permitted to enter the ring and minister to their fighter.
The cornerman may perform cutman duties such as applying ice or adrenaline to reduce swelling and stop bleeding. The cornerman may also be responsible for throwing in the towel when necessary.