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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 administer to their fighter.
- Ray Arcel
- Chuck Bodak, a legendary boxing cutman and trainer who worked with over 50 World Champions including Muhammad Ali, Rocky Marciano, Tommy Hearns, Julio Cesar Chavez, Evander Holyfield, and Oscar De La Hoya.
- Angelo Dundee, an American boxing trainer and cornerman best known for his work with Muhammad Ali (1960–1981).
- Lou Duva
- Robert Garcia
- Eddie Mustafa Muhammad
- Freddie Roach
- Emanuel Steward