Jaylen Brown looked really good. If I hadn't known he was a rookie I definitely never would have guessed it, he was extremely confident, poised and always making the right play. His stats sheet may not be impressive but he was excellent for his first game, I think we don't have to worry about his mental toughness (i.e he won't be passive like Jeff Green although they have the same "snooze" look).
I didn't notice any change in Smart's shot though but we'll see if his mechanic has really improved over the next few games. Rozier looked good after a bad first half but overall the second unit was playing too much one-on-one.
On the other hand, I was just giddy looking at the perfect fit between Horford and the rest of the starters, everything looked so easy and he was involved in every play during his short stint. I know we were only facing the Sixers (and lost) but I'm really looking forward to this unit playing against some real competition in games that matter.