Myth #36 - The ball is dead anytime the ball hits an umpire
If a batted ball hits an umpire before it passes an infielder, the ball is dead (award first base to the batter and one base each to any runners that are forced). On any other batted or thrown ball, the ball is live when the umpire is hit with the ball. Umpire interference also occurs when the plate umpire interferes with the catcher's attempt to prevent a stolen base.
LL Playing Rules: 2.00 INTERFERENCE (c), 5.09(b), 5.09(f)