John Adams, national coordinator for men's basketball officiating, said Tuesday that referees will call fouls on secondary defenders who make contact with a shooter while standing directly under the rim.

Another new rule will allow the opposing coach to choose someone already on the floor to shoot a free throw in place of an injured player.

Adams also says officials will also pay closer attention to intentional and flagrant fouls, and to 3-second calls in the lane to clear up rough play underneath. The officials also have been told to call fouls if a player's balance or speed is impeded, not just if it provides an advantage.