Interference with F3 on Fly Ball

[Big Slick]

Originally Posted by MD Longhorn

In NCAA rules, you're not supposed to call it the second it happens on a fly ball... like you would in any other code. You're supposed to see if it ACTUALLY interferes with a catch rather than potentially... in other words, the umpire is required to wait to see if the potential interference prevented the catch before making a ruling of interference.

Maybe you want to view this:

A.R.12.19.1.4^1:
With the bases loaded and no one out, the batter hits a declared infield fly
right in the baseline between first and second bases. The base runner, on her return to first base following her lead-off, runs into the first baseman attempting to field the fly ball.
1) The base runner from third base tags and advances home; 2) the base runners on second and third bases do not attempt to advance. In either
case, is this interference even though the base runner contacts the fielder who is already credited with the put out and is not making an additional play?
RULING:
In both cases, the batter is out on the infield fly and the ball is immediately dead when the base runner interferes with the first baseman making the catch. The base runner from first base is out on interference and the other base runners must return to the bases held at the time of the interference.

This is an interpretation posted on the Arbiter. The bold in my emphasis.