Has Jackson Carman did enough to keep the starting position??

[CJD]

Yes.

XSF is probably playing at his best, which is just average or below average. Even if Carman played exactly the same level as XSF, he has much more room to grow than XSF. And, to this point, my eyes have said Carman has played better overall. Keep the rookie in unless his play drops well below where he is at right now.