Under cutting?

[crosscountry55]

Originally Posted by APG

NCAA-M

A.R. 86. B1 slips to the floor in the free-throw lane. A1 (with his back to B1, who is prone) receives a pass, turns and, in his attempt to drive to the basket, trips and falls over B1.

RULING: Foul on B1, who is not in a legal guarding position. (Rule 4-17.4.a)

The rule is the same for NCAA-W...A.R. 84.

Ok. Interpreted by an established case play. Check.

So my next question is, where's the NFHS case play that explicitly refutes this interpretation for NFHS purposes? To put it another way, where's the NFHS guidance that says I shouldn't rule on this play the same way in high school as I would in college? Note the NCAA case play rule citation is 4-17.4.a, which is basically the same rule as NFHS 4-23-2a.

I'm not so sure this isn't a foul in high school, too.