Here's s fearless prediction (they're all "fearless" when there's nothing left to lose):
Dom Brown and John Mayberry will both be productive for the rest of the season. Why? For once, neither feels he will be yanked from the lineup after one unproductive outing. Once a player has been qualified as a major league player, confidence is the key to productivity. Yes, yes, I know, Mayberry struggles badly with breaking stuff low and away and Brown is still trying to figure out which way to turn on balls hit at him or over his head.
I am not predicting either will be an All Star (though Brown might be one some day) any time soon, but once each knows he will still have a job the next day after going 0-4, his confidence grows proportionately.
This I predict.