I'd sit Smart for the rest of the Summer League. Clearly feeling good about his 3-pointers, he's playing hard defensively... done quite a few good things running the offense. Let him finish off the Summer League in this high and go carry it into Training Camp.
Let's avoid risking injury as well considering how hard he goes.
Hes young and working on his game. I would play him the rest of the games.
Yeah, it's a risk, but I'd like him to finish out the summer league, too. Not the least of which is due to my enjoyment watching him dominate!

Speaking of which, MY GOD! That buzzer-beater 3?! He's hitting them off the dribble now, too!