The Miami Marlins' 2018 season was the 26th season for the Major League Baseball (MLB) franchise in the National League and the 7th as the "Miami" Marlins. Don Mattingly was the manager of the Marlins for a third year. The Marlins played their home games at Marlins Park as members of the National League East Division. They failed to make the playoffs for the 15th consecutive season. This year marked the first season under the new ownership group led by Derek Jeter and Bruce Sherman.