Runner on base hit with batted ball

[NCASAUmp]

Originally Posted by Az.Ump

2) Is runner safe because no matter what as long as runner is on the base the runner cannot be called out when hit by a batted ball. Maybe, could be out on intentional interference.

Intentional or not, interference may be the ruling. If a defensive player had the opportunity to make a play, the runner is out, regardless of whether or not they're on the bag. What the rules supplement didn't state about the potential dead ball is why the ball would be dead: ball hit runner, fielder behind runner had a chance, interference, dead ball, runner out.

In question #1 of this sitch, it's important to keep in mind that while they are "forced" to advance, the book does not really say WHEN they're forced to advance, ground ball or not. So all of the "no" answers that were posted are correct.