The other thing about Ivey. He is 66 games into his rookie season and no signs of hitting the "rookie wall". OK, his 3pt shooting has cratered a bit in March, but that's only 4 games.
It did appear that he had some extra heat on some passes early last night. A bit less heat, a bit more touch. Maybe the pass wasn't really there to begin with? But, like you said, he's going to make mistakes. The progression is there.