Memphis is playing .500 ball since he became a starter which, if anything, is worse than their overall record.
The last three months, when he has gotten all of his starts, and averaged 25 mpg over that time, the Grizz have gone 24-14. To be fair, he missed 4 games during which they went 2-2, so they are 22-12 with him over the last 3 months. If you wanna just include his starts, they are 13-8, certainly better than .500.
And his numbers as a starter? 13.5 ppg/3.5 rpg/1.8 apg/2.3 spg/0.8 bpg/and only 1.5 TO's a game, 53% FG, 79% from the line. And he has a PER of 18.1, which is very good, especially considering PER doesnt measure defense, his best asset. He's been very good for them, pretty darn consistant, and has been taking care of the ball, quite a feat for him.