Knee Brace Question

[mat time]

Can some one please recommend a good hinged knee brace that is legal to wear for high school matches. I'm looking for something that puts emphasis  on protecting the ACL.
Most of the ones I see have a openingthat isnt legal. Thanks.

[Wisconsin Wrestling Fan]

Not sure what is legal, but I was in Badger Sporting Goods in Madison recently, and it looked like they quite a few knee braces.  I had an ACL injury years ago which is why I happened to look at that section.   Not sure where you are located.