Speculation has swirled for a week after the Dodgers lost in the National League Division Series in five games to the Mets. Mattingly won three consecutive National League West division titles, the first time in Dodgers franchise history they made the postseason in three straight years, but he advanced past the first round just once in those three playoff trips.
Mattingly reportedly already left for home in Indiana within the last week, before his fate was decided, per Bill Shaikin of the LA Times, who also reported Mattingly's salary was between $1.5-2 million in 2016.
The Dodgers reportedly offered Mattingly a contract extension over the weekend, but he declined, per Ramon Shelburne of ESPN, with both Shelburne and Heyman citing Mattingly lacking confidence in the club's long-term support for him. Though Shaikin reported that the extension was just a concept and never formally offered by the club.
As reported by both Heyman and Shaikin, the Marlins were said to have interest in Mattingly. It is unknown if that had anything to do with his departure.
Before the NLDS began, general manager Farhan Zaidi expressed support for Mattingly.
"I think he's done a very nice job this season with the roster turnover we've had and mixing and matching different players, both in the clubhouse and on the field," Zaidi said on Oct. 6. "I think he's handled some of the strategic challenges of our roster very well, and I expect that to continue in the postseason.
"If you're going to tell me a team's success is solely driven by the manager, I just don't think that's how it works. Managers make strategic decisions and put guys in positions to succeed, but a lot of those decisions are 52-48 or 55-45. ... The games are decided by the players on the field."
Mattingly was 446-363 (.551) in five years as Dodgers manager, and 8-11 during the postseason.