Jason is one of our Brewer Fanatic writers.
As for Yelich, it appears that a balky back was the root of a lot of his issues. It was never clear exactly why his swing changed but he started killing worms at an elite rate, which is not something you want to do as a hitter. A lot like late-career Joe Mauer, honestly. Last year, it showed signs of changing and this year, he's damned near MVP-level Yelich again.