It signifies the man preparing the person for a job.
Seeing that you're a sports coach in the dream and preparing the youth for the match is a sign that you've implemented some of your thoughts to win. Making your team play, and seeing them win, signify that the new things you have implemented are successful. Seeing that you are an athlete and that a coach is working for you means that you are not capable of doing anything on your own, and that you always need someone to help you. According to another rumor: In a dream, the coach is a sign of your own entry. Seeing the trainer of non-legitimate games is a sign that the person spends a lot of money and does unnecessary work.