The kid is 21. He's gonna have some bad games, even as he reaches elite status. Even so, he had a +12 (yes I know that number in a single game sample is not necessarily indicative of how a guy plays but still...) and in fact all the starters had positive differentials. The bench? Yikes.
Grant W: 17 min, -11
Kanter: 5 min, -13
Robert W: 16 min, -11
Wanamaker: 26 min, -25
Green: 13 min, -4
Langford: 5 min, -16
Meanwhile, Utah's bench:
Niang: 12 min, +23
Bradley: 15 min, +25
Clarkson: 27 min, +26
Ingles: 30 min, +22