Tented,
I did some research on Matt Daly, Coco's new coaching addition, he previously worked with Shapo for 1 year, though the most pleasing aspect was he is a specialist in grip changing, and technical support, hopefully that fhand will be under better control with a grip change, and also working on her serve., which I feel at times, when she feels pressured is more 'emotional' than technical, though on her 2nd serve she tends to drop her head.
Sabalenka had a serve a couple of years ago that let her down big time, one year she top the player with the most DFs in one year, she has always had the foundations of a great serve, then she hired a biomechanic specialist and got her serve under control, I noticed him in her box this year at the final at the USO, so he apparently still works with Sabalenka, he also got her fhand under control as well.I am happy the Coco has hired Matt Daly who can help her in the technical area's of her game.