I liked Campbell performance, given that this is his first start with proper players. There's a lot of talent there to work with, his attitude is positive and he works incredibly hard. Many positives to take from this game, and he was certainly better than what Ox has shown us this season. Not sure why there are some criticism here, but it's good most are giving him the due credit.
I think he needs more intensity in his game, and I mean much more. His body language always looks like he is slowing it down. His stamina needs more improvements though, I think he expends too much sprinting in unncessary situations where he don't really need to track back or double up. I laughed when I saw him not even able to walk back to an onside position around the 80th minute mark.