BOSTON — Winning a World Series in this championship-drunk town apparently doesn’t get you very far.

Minutes after the Yankees’ 10-5 defeat of the Red Sox on Sunday night at Fenway Park, the defending World Series winners fired Dave Dombrowski, their president of baseball operations. A trio of assistant general managers — Brian O’Halloran, Eddie Romero and Zack Scott — will run the team’s baseball operations on an interim basis, the club announced. Romero, whose father, Ed, played for the Red Sox, has long been considered a potential future GM.

While the timing surprised, with Dombrowski failing to make it to the end of the regular season, his job security had been a topic here throughout the season, and legendary Boston Globe columnist Dan Shaughnessy had written twice recently that Dombrowski would take the fall for the Red Sox’s disappointing 2019 campaign, with nary a denial or objection from Boston’s ownership.

The Bosox own a 76-67 record, putting them 17½ games behind the Yankees in the AL East — a Yankees victory Monday night would officially eliminate the Red Sox from the divisional race — and eight games behind the A’s in the competition for the second wild-card spot.

The team largely rested on its laurels over the offseason, declining to spend money on its questionable bullpen. Yet two investments that Dombrowski did make — a four-year, $68 million commitment to former Yankee Nathan Eovaldi, a free agent, and a five-year, $145 million extension to ace Chris Sale — quickly backfired.

Nevertheless, the team’s nucleus remains strong, with a respected manager in Alex Cora, and the Red Sox did win 108 regular-season games last year before cruising to their fourth title in 15 years. The quick dismissal of Dombrowski in the wake of such success enhanced speculation that something beyond the state of the team fueled ownership’s quick trigger finger.

With a ring from the 1997 Marlins and two AL pennants (2006 and 2012) from his time with the Tigers, the 63-year-old owns the sort of résumé that will get him on a Hall of Fame ballot sooner rather than later. Whether he builds on that, however, stands in question.