Closer shots have a better chance of going in than long distance ones. Use the set plays on offense. Have the point guard call the plays while dribbling down court and pass the ball to the players who manage to get open. Know your players. Use the all-stars on your team for that crucial, clutch shot.
Point guards are usually great at stealing the ball and creating havoc on defense.
Use your point guard to pressure the other team's point guard into turning over the ball. Make sure your defense matches up well with the other team's offense. You may want to have certain players on your team guard specific players on the opposing team. You can do this in the Team Settings menu. Try to keep your best players out of foul trouble.