Also, have not seen it posted - wondered if anyone else noticed, it was somewhere in the 2nd set, Andy had made an error which obviously was annoying but instead of any sort of negativity, he literally brushed it away with his arm, you could see him sweep it off to the right into the imagined trash. Just as we have been suggesting for some time! He is no doubt getting the same advice from Llendl. It worked beautifully.
If memory serves me right, I think the commentators I was listening to on ESPN noticed not only this but how greatly Andy's attitude, on-court behaviour and body-language have improved since linking up with Lendl.