Knox is/was a member of a club called "the Barn" in NH. The Barn's coach, Matt Smith, wrestled for PSU for a year or two. Smith placed in Midlands, and I am pretty sure he beat Matt Valenti. Anyway, this is something they've been using in that club for 20+ years. Smith was good all around, but was extremely punishing on top with legs. Pretty good guess is that is where Knox picked this up.