Cornerman

A cornerman, or simply corner, is a combat sports term for a coach or teammate assisting a fighter during the length of a bout. The cornerman remains outside the combat area during the fight, but in proximity, and can assist the fighter through instruction. This instruction can take place in between rounds, as in boxing. The cornerman occasionally...
Found on http://en.wikipedia.org/wiki/Cornerman

Cornerman

[basketball] In basketball, a cornerman is a player who can play both the small forward and power forward basketball positions. `Cornerman` is sometimes interchangeably used with the term `forward` but generally refers to players that can play both forward positions. They usually fit two categories. One category comprises those small forwar...
Found on http://en.wikipedia.org/wiki/Cornerman_(basketball)

Cornerman

A coach, cutman, or person responsible for tending to a fighter between rounds.
Found on https://www.titleboxing.com/boxing-dictionary

Cornerman

Also referred to as a 'corner'. This is a source of support and advice for a fighter during a bout, whether it be a coach, assistant coach or cutman.
Found on http://www.ufc.com/discover/glossary/list

Cornerman

Also referred to as a 'corner'. This is a source of support and advice for a fighter during a bout, whether it be a coach, assistant coach or cutman.
Found on http://www.ufc.com/discover/glossary/list

Cornerman

One of several people who work in a fighters corner during a fight.
Found on https://www.predictem.com/boxing/boxing-terms-lingo-jargon/
No exact match found