They are different measurable parameters but they are related. It’s harder to make contact on balls that are a foot off the plate. So the K rate is bound to be higher if the chase rate is higher. It’s no coincidence that the 2018 World Series championship team was one of the best at not striking out-fifth best in all of baseball. While this team is currently doing well I don’t expect that they will have that level of success.
Cora has said that the K rate is something the team has talked about. They are aware of the need to be more selective.
June 25, 2025: Following a loss to the Angels where the Red Sox struck out 14 times, Cora acknowledged the team's ongoing struggle with strikeouts, stating, "If you follow us, we've been striking out since day one, so we need to make adjustments".
https://www.si.com/mlb/red-sox/boston-red-sox-news/alex-cora-gives-brutally-honest-take-on-red-sox-s-fatal-flaw-jackson3#:~:text=In this story:-,Boston Red Sox,traded that's really been alarming.
I know that chase rate and K rate are different, but I maintain that they are related. This is from an AI search:
Chasing pitches increases strikeout risk:
When a batter swings at pitches outside the strike zone, they are more likely to miss the ball (resulting in a whiff) or make weak contact, increasing the chances of striking out.