He said they suggested a tweak to his hands/stance, which is something that can bear relatively quick fruit like with Vargas last season and Gonzo in the minors this year. But overall he hasn't really gotten much playing time to evaluate him on. I suspect Getz and co. were concerned about Peters' slump lingering on which would have potentially opened up more CF ABs for a guy with a high defensive floor there, but Peters has picked it back up since. Doyle did have that 110mph lineout vs. Manaea and his BABIP is low enough (.231) to suggest some bad luck, so time will tell.