He's barely 19, is 170lbs ... Hitting 92-93 a few times is actually pretty good. Basically a projectable high school kid from the draft. I know Ray's a lefty, but I don't even think Ray touches 93 much, if at all.
For him to skip the GCL, it must say something about his make up and control. So he's probably not some guy who ridiculous stuff right now.
But with a tiny frame and being so young, there's certainly a ton of time to add more velocity to his fastball. Nothing to worry about IMO. He's clearly not a 'top' prospect, but he's one to watch.