[BigTex]

Originally Posted by bob jenkins

Here's the NCAA Collision Rule:

Collision Rule
SECTION 7. The rules committee is concerned about unnecessary and violent
collisions with the catcher at home plate, and with infielders at all bases. The
intent of this rule is to encourage base runners and defensive players to avoid such
collisions whenever possible.
When there is a collision between a runner and a fielder who clearly is in
possession of the ball, the umpire shall judge:
If the defensive player blocks the base (plate) or base line with clear possession
of the ball, the runner may make contact, slide into or make contact with a fielder
as long as the runner is making a legitimate attempt to reach the base (plate).
Contact above the waist that was initiated by the base runner shall not be judged
as an attempt to reach the base or plate.
(1) The runner must make an actual attempt to reach the base (plate).
PENALTY—If the runner attempts to dislodge the ball or initiates an
avoidable collision, the runner shall be declared out, even if
the fielder loses possession of the ball. The ball is dead and all
other base runners shall return to the last base touched at the
time of the interference.
(2) The runner may not attempt to dislodge the ball from the fielder. Contact
above the waist shall be judged by the umpire as an attempt by the runner
to dislodge the ball.
PENALTY—If the contact is flagrant or malicious before the runner touches
the plate, the runner shall be declared out and also ejected from
the contest. The ball is immediately dead and all other base
runners shall return to the last base touched at the time of the
interference.
(3) The runner must attempt to avoid a collision if he can reach the base
without colliding.
PENALTY—If the contact is flagrant or malicious after the runner touches
the base (plate), the runner is safe, but is ejected from the
contest. The ball is immediately dead and all other base
runners shall return to the last base touched at the time of the
interference. If this occurs at any base other than home, the
offending team may replace the runner.
If the contact occurs after a preceding runner touches home
plate, the preceding runner is safe. The ball is immediately
dead and all other base runners shall return to the last base
touched at the time of the contact.
(4) If the runner’s path to the base is blocked and (1), (2) and (3) are fulfilled,
it is considered unavoidable contact (see Rule 2-54, Obstruction).

Thank you for the reference.