Fatse had previously worked in the Red Sox organization but was one of the coaches fired in April, along with manager Alex Cora. Fatse was hired by Boston as an assistant hitting coach after the 2019 season and served as hitting coach from 2022 through April of this season. From 2022 through 2025, the Red Sox were fourth in MLB in batting average, 11th in on-base percentage and sixth in slugging percentage, while ranking in the bottom third of the league in walk rate and strikeout rate. After he was fired by the Red Sox, Fatse took a job as a hitting consultant with the Tampa Bay Rays’ research and development group. He will be part of a coaching shakeup in Philadelphia after another early playoff exit.