He'll probably be used in a role over the course of the rest of the season that's generally significant. He may not be, and in that case we did waste a redshirt.
And your sentence said "we don't know how good he is/isn't" referring to Tyler Brown. What does that even mean. Rhoads should play somebody so fans can find out if he's good or not?
Well yes, so fans can find out, but also so coaches can see how a guy handles a game and not just a practice.