Per Joel Sherman of the New York Post, the Mets have promoted Mariano Duncan to the major league staff. Sherman notes that Duncan is expected to help in multiple areas within the position player group. Duncan has served as the Binghamton Rumble Ponies bench coach in the Mets organization since 2022.

He played in the majors from 1985 to 1997, slashing .257/.300/.388/.688 with 87 HR, 491 RBIs and 174 stolen bases. As a player, he won two World Series championships and was an All-Star in 1994.

After retiring as a player, he served on the Dodgers coaching staff from 2006-2010 as the first base and infield coach, and before joining the Mets, he worked in the Cubs and Tigers minor league systems. He also managed the Mumbai Cobras of Baseball United.

Duncan has worked with many of the young players on the major league roster dating back to Brett Baty and Francisco Alvarez when they were on the Brooklyn Cyclones, and he was the Cyclones’ bench coach. In 2021, Jacob Resnick of SNY spoke with Duncan, where he described his job as being there to “look past the stat line” when developing prospects. His goal was to ensure the players he worked with understood the fundamentals and to help players become well-rounded.