[whiskers_ump]

What constitutes umpire interference?
Is there a difference when an umpire interferes with a batter, BR, or Runner.
What about interfereing with the ball? In fair territory.. In foul territory?
If a hit ball hits a BU, lets say behind F4, and is stopped dead.. Is it treated the same if it had hit the base at 2B and stopped dead???
Maybe an easier way, is there a section in the rule book on UI??? I couldn't find a reference to it...

Could not find my ASA but probably same.'
NCAA Section 16.

a. When a fair, untouched batted ball strikes the person, attached equipment of an
umpire before passing a field (other than the pitcher), or after passing an infielder
(including the pitcher) but another fielder had a reasonable chance to make
a play.
b. When a fair, untouched batted ball strikes the person, attached equipment, or
clothing of an umpire before touching a fielder (including the pitcher).
EFFECT: The ball is dead. BR is awarded first base and credited with a base
hit. If forced, each base runner advances one base with no liability to be put
out. If not forced, each base runner must return to the base legally occupied
at the time of the pitch. EXCEPT: It is not interference, the ball remains in play,
If the ball; (1) hits the umpire after passing a fielder, other than the pitcher
and no other infielder has a reasonable chance to make a play; or (2) hits the umpire
after touching a fielder (including the pitcher).

Note: When said ball touches the umpire while still in flight it shall be considered
a ground ball. It cannot be caught as a fly ball.

c. When the plate umpire or his/her clothing interferes with the catcher's
attempt to throw out a runner on a pickoff or steal attempt.
EFFECT: Delayed dead ball is signaled, If the runner is not out, they must
return to the base legally occupied at the time of the pitch. If ruled out,
ball remains live and there is no interference.

It is not interference if a pitched or thrown ball strikes an umpire. The ball is
live.