Charlotte beat Chicago in the first game. Rozier was -18 in 30.5 minutes and the team was +19 in the 17.5 minutes he was on the bench.
The last two games, Charlotte has won. Against the Kings, he was -5 in 35 minutes while the team was +12 in the 13 minutes he was on the bench. Last game he finally was a + in a win of course it was against the Warriors without Curry, Green, or Russell. He was +11 in his 36.5 minutes (the team was -5 in the other 11.5 minutes).
In other words, the Hornets have beaten 3 bad teams almost in spite of Rozier.