1st and 3rd situations - Walk-off
This play is a good
defense for a walk-off from first. The key to the play is getting the ball
to the second baseman before the runner gets past him.
Once the walk-off has occurred and everyone yells walk-off, the pitcher
steps off the mound, freezes the runner at third and quickly throws the
ball to the second baseman. The second baseman must judge the speed at
which the base runner is moving and take an angle so he can catch the ball
a few feet in front of the runner and in the base path. The base runner
will not expect the ball to be thrown to the second baseman and it can
result in a quick throw and tag play for the defense.
If the second baseman cannot get in front of the runner the pitcher must
recognize this and get the ball to the shortstop who will be covering
second base by this time.