R3 Misses Plate on Walk

[Rich Ives]

It wasn't a force out. R3 was entitled to advance to home without liability to be put out due to the bases loaded walk. If a runner overruns an awarded base he has to be tagged.

For plays at home - see 7.08(k)

k) In running or sliding for home base, he fails to touch home base and makes no attempt to return to the base, when a fielder holds the ball in his hand, while touching home base, and appeals to the umpire for the decision.
This rule applies only where runner is on his way to the bench and the catcher would be required to chase him. It does not apply to the ordinary play where the runner misses the plate and then immediately makes an effort to touch the plate before being tagged. In that case, runner must be tagged.