In 2019, Luis Castillo stopped throwing strikes. Pitchers around baseball are always introducing subtle changes in the way they approach things on the mound, tweaking anything from their mechanics to their pitch mix or adding a tick of velocity. But Castillo’s adjustment was not subtle. Over his first two big league seasons, he’d had just one month in which he threw fewer than 49% of his pitches in the strike zone, and that was the first month of his career. Then, in the first month of 2019, just 40.3% of his pitches finished in the strike zone.
Luis Castillo is back in the zone
