take a look at this guys stats from last season and the current season. Did he overperform last season? I know he's undererforming this season, but I don't know why it's such a large fluctuation. Same pitching coach, same bullpen coach, throwing to a catcher with a better pitch calling rating. Can you offer any explanation? https://www.whatifsports.com/HBD/Pages/Popups/PlayerStats.aspx?pid=7442196