J.D. Martinez, a six-time All-Star who played 14 seasons, has been appointed as a special assistant to the New York Mets team. This role aligns with Carlos Beltrán, who has become a visible presence around the team. Martinez credits his mentorage to his early days with the Astros, where he sought advice from veterans. He also mentioned Mark Vientos, who had a breakthrough season before regressing last year, and how he felt he could help with his player's development.