10+ Sample Coach Resignation Letters - Template When writing a resignation letter to your coach, it is important to observe politeness and include positive statements in your letter. Showing your appreciation helps not to burn bridges with your old team. Coaching Resignation Letter - Great Sample Resume Coaching Resignation Letter. Here is a coaching resignation letter from a college basketball team coach who has accepted a job opportunity elsewhere. He writes this formal letter to the manager, notifying him of the situation and clearly communicating the official effective date of his resignation.