Teams win Championships, not Coaches or a few star players. The Coach is dedicated to increasing the team's talent, creating and managing the team's culture and vision and putting the proper systems and process in place to provide the opportunity for success as a TEAM...
There isn't a coach in any sport, at any level, who would consider putting players on the field, on the ice or on the court without proper preparation and practice. Teams practice for days before every game. Have you seen a sales team that practices before every sales call or big meeting?