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In some professional sports operations the head coach also serves as general manager, the team executive responsible for acquiring the rights to players and negotiating their contracts, generally in recent years with their agents, and for trading or dismissing players, but these roles have been increasingly likely to be seen as separate functions fulfilled by separate persons in more recent years, although many coach/general managers still exist.
 
 Many coaches, usually those of school-sponsored sports teams, also bear the responsibility of teaching the skills, rules and tactics involved in a particuliar sport to its players. This can be accomplished individually, by team, by division (ex. Defensive Coaching, Offensive Coaching, etc.) or by position (ex. receiver coach, quarterback coach, etc.) where applicable. Under this system in which duties are divided, there is necessarily a head coach who oversees all other coaches as a supervisor.
 
 Successful coaches often become as well or even better-known than the athletes they coach, and in recent years have come to command high salaries and have agents of their own to negotiate their contracts with the teams. Often the head coach of a well-known team has his or her own radio and television programs and becomes the primary "face" associated with the team.