Players do not magically turn on "commitment" and "loyalty" to their teammates when the season starts. Most often if they don't have it in the off-season, they are never going to have it! As a coach, you can sense the potential of your team and the potential of individual players as you observe their off-season commitment to each other.
The following is interesting thoughts on the role of commitment in building a championship team. It is from Jeff Janssen.