The Mets are adding Mariano Duncan to their major league coaching staff, according to Joel Sherman of the New York Post. MLB.com's Anthony DiComo carried the report, and MLB Trade Rumors, Yahoo Sports and Amazin' Avenue picked it up. Sherman does not specify a title. Per MLB Trade Rumors, his duties will involve working with the position players "in various facets." Amazin' Avenue quotes Sherman as writing that Duncan "is expected to help in multiple areas with the position player group."

Duncan is not new to the organization. Yahoo Sports and Amazin' Avenue both note he has coached in the Mets' minor league system since 2019. The move therefore promotes someone from inside the system. Amazin' Avenue's summary cuts off before it says what Duncan did in those years, so we can't say which levels or roles he held.

MLB Trade Rumors adds a second item. Mike Puma of the New York Post separately reports something about a Kevin, but the feed summary ends mid-sentence. We can't say what the report says or who Kevin is, so we are not guessing.

The vague job description matters because of how the staff is already laid out. Our 2026 staff list has Troy Snitker as hitting coach, Rafael Fernandez as assistant hitting coach and Jeff Albert as director of major league hitting. Tim Leiper is third base and infield coach, and Gilbert Gomez is first base and outfield coach. None of the reports says whether Duncan fills a new slot or changes anyone else's duties. That is the main open question.

The Mets finished 74-88, fifth in the NL East. They lost 6-4 at Washington on Sunday, Sept. 27, to end the year. They had won 7-1 the day before and lost 7-6 on Friday, Sept. 25. A staff addition after a losing season is a change to the group working with the position players. None of the four outlets ties the move to the record or to any other staff decision, and we won't either.

Our archive can't show what Duncan would bring to the role as a player. Its only line for him is 1997 with the Blue Jays: 89 games, .236, one home run, 25 RBI and a .554 OPS. That is the end of a playing career that stopped nearly three decades ago. It says nothing about his coaching.

The regular season is over, so there is no next game to point to. The open items are Duncan's official title and whether the Mets confirm the move. Sherman's report also leaves open whether other staff changes come with it.