Playing a sport teaches children the value of hard work and sportsmanship. It also prepares your athlete for their future when they take up a job and must work with a boss over them. The discipline of regular practices and teamwork cannot be understated. However, within the four leading roles of sports: player, referee, coach, and spectator, a nefarious new position has crept onto the scene – the sideline coach. There are many skills that games teach our children, but the sideline coach can negate all of them.