Was going to post something like this. I'm lucky I'm winning in ranked seasons but I'm struggling big time.
I spent a weekor two grinding my rtts player and followed the suggested grind of changing pitchers to 1 overall and putting it on rookie. Super slow 84 mph fastballs right down the middle for 20 hours or so. Then went back into DD and now all of a sudden, 500/600 ranked fastballs that are going 95 mph are a blur and I'm swinging once the catcher has it in his glove.
I used to put up 10+ runs in those ranked ratings and now I can't hit. Have no clue how long it will last but hopefully I adjust soon. Don't know if it was worth grinding to get a created player.