What you have to know about young MLBers, if you don't already, is that it's possible for them to get through to AAA on athleticism only. Once you get to the Show, the only way you stay is to have a real hit tool. Most guys don't get it, but you have to tie the hands to the body rotation, get the barrel flat early and get sat behind the front foot to swing slightly up. I'm talking base swing here, not crazy adjustments. When Szczur first came up, he swung downward into the ball and essentially took his hands in a straight path to the ball. Last season, he showed up for spring swinging up, hence why he had a lot of bombs in ST. He still hadn't quite gotten the hang of tying his hands to rotation and flattening the barrel early enough though. This season he showed up even more improved with that "compact" swing you observed. It's exciting to see young players figure things out and over the past few years I've watched Matt, I believe he has made significant improvements that can make him a quality every day MLBer.
And yes. I remember Bill Madlock. One of my favorites back then.