The New York Mets’ losing streak was on the ropes on Sunday.

But a blown save by Devin Williams spoiled a ninth-inning shutout, and the Chicago Cubs prevailed, 2-1 in extra innings to extend New York’s misery and its losing streak to 11 games. Former Met Michael Conforto delivered the blow that sent the game to a 10th frame.

With the loss, a Mets team that invested in the league’s second-most expensive roster behind only the Los Angeles Dodgers drops to an MLB-worst 7-15.

Mets were on the verge of winning

In a bullpen game, five Mets pitchers combined to shut the Cubs out for eight innings. Mets left fielder MJ Melendez, meanwhile, plated the only run of the game up to that point with a fifth-inning solo home run.

The Mets went to the bottom of the ninth at Wrigley Field with a 1-0 lead and a chance to snap a 10-game losing streak. Williams, who signed from the crosstown Yankees in the offseason to replace now-Dodgers closer Edwin Díaz, took the mound with a save at stake.

Ian Happ led off the inning with single to right field and was replaced on first base by pinch runner Scott Kingery. With one out and Kingery still on first, up came Confroto, who played his first seven MLB seasons with the Mets.

Conforto delivers on Williams meatball

Williams threw a first-pitch fastball over the heart of the plate, and Conforto delivered a line drive that bounced to the right-field corner. Kingery ran home, and Conforto reached second with a stand-up double.

That ultimately sent the game to the 10th inning tied at 1-1. In the bottom of the frame, the Mets sent another high-profile offseason acquisition to the mound in nine-time All-Star reliever Craig Kimbrel.

Pete Crow-Armstrong stood on second base as Chicago’s extra-innings ghost runner and advanced to third on a no-out wild pitch by Kimbrel. With one out, all the Cubs needed from second baseman Nico Hoerner was a fly ball to the outfield.

Hoerner delivered just that to right field, and Crow-Armstrong beat the throw home to secure a walk-off win.

The loss with one run was painfully familiar to Mets fans who have so far watched the league’s second-highest payroll produce the second-fewest runs in MLB as of Sunday.

Williams’ struggles were also familiar to Yankees fans. Williams joined the Yankees last season after six seasons as one of MLB’s best closers with the Milwaukee Brewers, only to lose his job as closer early in the season.

He regained the job and ultimately posted a career-worst 4.79 ERA, and the Yankees ultimately let him walk as a free agent. With the Mets, Williams now has a 7.11 ERA in seven appearances.

The loss completes a three-game sweep at the hands of the Cubs. The Mets have upcoming three-game home stands against the Minnesota Twins and Colorado Rockies. They’ll need at least one win in those six games to avoid tying a franchise worst 17-game losing streak set in 1962.