Ball in play

Once the pitcher has the ball in control and retains possession on the mound, the play ends.
Runners who
are off base at this time and in forward motion may advance only one base. Runners who are off base at this time and not in forward motion must return to the base from which they were running.
Interference is:
a. when any non fielder or non permanent object except a Referee or a runner, touches or is touched by a ball in play in fair territory. This interference causes the play to end, and runners shall proceed to the base to which they were headed.
b. when any runner on or off base intentionally touches a ball, or hinders a fielder. This interference causes the play to end, the runner to be out, and any other runners shall return to the base from which they came, unless forced to advance .
c. when any kicker intentionally touches a pitched ball by hand or arm before the pitch is called a Ball or Strike, or intentionally touches a kicked ball to render it foul. This interference causes the play to end, the kicker to be out. and any runners shall return to the base from which they came.
During any play where a ball is popped or deflates significantly, that play shall be replayed with a properly inflated ball.