I have been letting my AI manager handle lineups, pitching changes, pinch hitters, etc... but I haven't been happy with his decisions.

I should take over all of that -- I am playing out games. Here's more of the detailed stats... My top four starters have been Lopez, Rodriguez, Paddack, and Ryan, with Varland getting injured early on and Detmers being the fill-in 5th. My defense is generally good, but the AI makes poor decisions there too! Thanks for the advice!