I've done this on a RARE occasion, and it's more for my partners than anything else. If I rotated late, or if I think they didn't recognize my rotation (seeing that they are a very low T), I'll point after a made basket and say their name to make sure they know I'm on their side of the floor.
I know on tape it looks like I'm just pointing, but that's why I do it. No other reason to do it though...
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