Gastelum’s success to this point stems from one pitch: his low-80s changeup. It’s a mesmerizing offering with negative induced vertical break and plenty of armside run. It practically works like a left-handed breaking ball, but instead emerges from the 6-foot-2 right-hander’s low three-quarters delivery. Because of that action, the cambio was even more effective against righties than lefties last year with a 64 percent whiff rate against same-side bats. (Not that lefties fared that much better.) Gastelum can throw a mid-90s fastball, but with ordinary movement, it only works to set up his beast of a change. He’ll occasionally work in a mid-80s sweeper too for something with big gloveside movement
I’ve never once heard of this guy; great numbers though
Plus he and Stanek have the flowing hair thing going
His changeup is a Bugs Bunny pitch. Only pitch in his arsenal that really even resembles a major league pitch, but it is a true outlier. It looks like a split finger pitch but has more horizontal movement added in and isn't as hard. He leans on it repeatedly and it is going to be fascinating to see if it's THAT good that he can be a major league effective pitcher with one pitch that isn't a fastball that is good.
Gastelum will not be active for the *first* game today, and potentially will not be active until tomorrow. He is traveling to St. Louis and will be on the roster at some point in the next two days, but the timing is evidently still fluid
