Interference Pop Foul First Base?

[Rich Ives]

Only one I have is NCAA Softball

12.19.1.4.1 When the defensive player, while watching the flight of a
ball, bumps a runner who is standing on a base and fails to make a
catch on a catchable ball, the runner shall not be called out unless
the hindrance is intentional. A runner must vacate any space needed
by a fielder to make a play on a batted ball, unless the runner has
contact with a legally occupied base when the hindrance occurs.
This is an exception to the rule that defensive players must be
given the opportunity to field the ball anywhere on the playing
field without being hindered.

BTW: All baseball rules are the same - if in contact with the base interference must be intentional.