There’s something different about these Red Sox.

Over the past few years games like Monday night rarely had a happy ending. After the Red Sox blew a late lead and allowed five runs with two outs in the top of the seventh a disappointing loss seemed inevitable. But rather than roll over, Boston punched back and rallied to tie the game with four runs in the bottom of the eighth.

Then, after Kenley Jansen kept the Blue Jays off the board, Jarren Duran finished the comeback with a walk-off single, giving the Red Sox a 7-6 win and arguably the signature victory of their season.

Before all the drama, Tanner Houck was outstanding. The right-hander retired the first nine men he faced and sent the Blue Jays down 1-2-3 in four separate innings. He allowed an RBI single to Justin Turner in the fourth but escaped without further incident after drawing an inning-ending double play, and in the sixth he picked up two quick outs before escaping another jam. The Blue Jays loaded the bases with a hit by pitch, a Guerrero double and a Turner walk, but Houck forced George Springer to fly out to end the threat.

At that point the Red Sox led 2-1 thanks to mammoth two-run home run by Rafael Devers in the fourth, who smashed a slow Chris Bassitt curveball 443 feet into the right field bleachers. But in the top of the seventh Toronto got the leadoff man on after catcher Reese McGuire was called for catcher’s interference, and that soon proved costly.

Houck got a strikeout and drew a groundout to bring up two outs again, but the groundout also moved Addison Barger into scoring position, and Kevin Kiermaier capitalized by delivering a game-tying RBI single. That forced Houck from the game, and in his place Cora summoned Campbell, who had been called up from Triple-A hours earlier.

Campbell’s return to the majors did not go as planned.

The right-hander quickly allowed the go-ahead RBI single to Spencer Horwitz, and then Guerrero crushed the first pitch he saw clear over the Green Monster, a 471-foot rocket that according to Statcast was the fourth longest home run hit in the majors this season.

That was a three-run shot, and in the blink of an eye Toronto led 6-2.

Not helping matters was Boston’s punchless offensive performance against Toronto starter Chris Bassitt. The veteran righty allowed two runs over seven innings, giving up five hits and one walk while striking out two, and outside of Devers’ home run Boston only managed four singles.

Fortunately Toronto’s bullpen has been among the worst in baseball this season, and once Bassitt was gone the Red Sox made their push.

Trailing by four in the eighth, Jarren Duran skied an infield popup that the Blue Jays infield lost and allowed to fall in for what was ruled a double. Then David Hamilton ripped a two-run home run to right-field, cutting the deficit in half and making it 6-4 Blue Jays. Then Devers singled and Tyler O’Neill doubled to put the tying run in scoring position, and the Blue Jays intentionally walked Rob Refsnyder to load the bases.

During the ensuing pitching change, the Fenway Park jumbotron showed the NBA champion Boston Celtics with the Larry O’Brien trophy, which sent the crowd into a frenzy. Then, pinch hitter Romy Gonzalez hit the first pitch he saw from Blue Jays reliever Zach Pop for a two-run single, tying the game at 6-6.

Kenley Jansen shut the Blue Jays down in the top of the ninth, getting a hand from catcher Tyler Heineman after the recent Triple-A call-up caught pinch runner Steward Berroa stealing, and in the bottom of the ninth Ceddanne Rafaela reached on an error and advanced to second on a balk before Duran sent the fans home happy with his game-winning hit.