What's the call in this instance.....

[just another ref]

Originally Posted by JugglingReferee

Tripping over someone's foot is likely because that foot is outside the cylinder that each person is entitled to. ..... possible foot-outside-the-cylinder contact caused a block (more likely).

If the contact was the illegal foot position, I have a blocking foul.

If the defender is there minding his own business, he can be doing the splits, and if he does not move, it isn't a blocking foul.