A coach must recruit and build a team, and the number of players he can put on a roster is limited. A basketball coach must determine the right mix of players who can fill guard, forward and center positions, including bench players who might have to play more than one position. The coach must create a mix of players who can start right away and players he can develop into future starters. Ongoing team-building activities include organizing social interactions, developing a team philosophy, choosing the types of offense and defense the team will play, teaching players situational play to fit the team style and running practices. Creating team rules and enforcing those rules are key parts of his responsibilities.