The Red Sox have filled another spot on Chad Tracy’s major league staff, bringing in Shelly Duncan, a move that adds both coaching experience and a familiar baseball name to the mix.
Duncan arrives in Boston after a long run on the development side of the game. Once his playing career ended in 2014, he moved straight into coaching.
He joined the Diamondbacks’ minor league system in 2015, managed at three different levels, and won a league title in 2018. After bouncing around several organizations, he spent the last three seasons running the Yankees’ Triple-A club.
In 2025, he was named the league’s manager of the year.
The hire also comes with a little extra edge for Boston, since Duncan was viewed by some Yankees fans as Aaron Boone’s eventual replacement. Instead, he’s now headed to the Red Sox, and while his exact role on Tracy’s staff has not been set, his track record suggests he’ll have a hand in plenty.
Duncan’s name carries more weight in St. Louis, too, because of the family legacy attached to it.
Cardinals fans know the Duncan family well, starting with Dave Duncan, the longtime pitching coach who helped turn “nobodies into somebodies” and built a system that fueled sustained success on the staff. Shelley’s background as a minor league coach and manager fits that same development-minded mold, and that kind of experience could matter for a young Red Sox roster.
There’s also the connection to Chris Duncan, Shelley’s brother, who played for the Cardinals while their father was in the organization. Chris never locked down a permanent starting job in St.
Louis, but he still left his mark and helped the Cardinals win the 2006 World Series. His death from cancer in 2019 brought players, staff, and fans together around those memories, and his impact remains part of the Duncan story.
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