In veterans Braden Smith and Fletcher Loyer, Purdue has one of the better and most proven and experienced backcourts in college basketball. That doesn’t mean, however, that freshmen Gicarri Harris and CJ Cox are bound to simply be their understudies. Yes, the two freshmen represent virtually the entirety of the Boilermakers’ backcourt depth — Purdue really only has four true guards among those in its projected rotation — but Harris and Cox won’t just play behind Smith and Loyer, but with them, and in a way that complements the two juniors. For instance, Harris started at Creighton — that figur…