Jansen took the mound after Greg Weissert allowed the Yankees to get runners at the corners with two outs in the penultimate inning and the top of the order due up. But the call actually came earlier than that, with Walker calling Cora after Weissert walked Anthony Rizzo, which began the jam.

“Playing against the Yankees, I told our bullpen coach, Walk, just whenever you see Weiss in trouble, call down,” Jansen said. “And he called down and I started warming up. Good communication between us and AC. [I said], ‘Give me that ball.’ I want to just come out there and stop that inning right away so it doesn’t [give] the momentum to them.”

After DJ LeMahieu grounded into a fielder’s choice with the bases loaded, Jansen put an end to the Yankees’ brief rally. He got two quick strikes on Anthony Volpe before the shortstop flew out to right to end the top of the eighth.

The Red Sox gave Jansen some insurance in the ensuing half inning. Jarren Duran knocked Ceddanne Rafaela following his double to start the bottom of the eighth. Boston’s speedster scored later on when Yankees catcher Jose Trevino botched a pickoff attempt, making it 8-4.

Jansen remained in the game and retired the Yankees’ three-most dangerous hitters in order. He got Juan Soto and Aaron Judge to fly out to center on his cutter before Alex Verdugo lined out to left to end the ball game.

“It’s great and all, but at the same time you’re locked in,” Jansen said of his outing. “It don’t matter what the score is. I just gotta go out there and — those guys can put four, five, six runs up in an inning. You gotta respect them, and just go out there and go to work.”

While the save marked Jansen’s 11th of the season in 12 opportunities, it marked his first four-plus-out save since last July. The 36 year old did pitch two innings last Sunday against the White Sox, getting a hold while the Red Sox tied the game in the ninth before winning in extra innings.

Jansen shouldering an extra burden recently can be seen as a good sign. He dealt with lat and back injuries during spring training that also caused him to sit and miss save opportunities at the beginning of the season.

“He’s in a great spot physically, mentally,” Cora said. “I know people criticized him early in the season. But you guys see him every day here and you see the work he puts [in]. And the way he has talked about this situation. He’s into it. He wants to help us win. He cares about his craft.”

Jansen has also been effective as of late. He’s allowed just one run on three hits, a walk, and nine strikeouts in 7 1/3 innings over his last six outings.

“Obviously, he’s shooting for a lot of stuff in his career,” Cora said. “The more saves he gets, the closer he gets to Cooperstown. But right now, he’s in the moment and we appreciate that. I respect that guy. He’s been amazing for me throughout the year — trying to help me out mentoring guys and trying to clean up a few things that rookies will do. And he’s been amazing.”

Saturday’s save was the 431st of Jansen’s impressive career. It was also his fourth against the Yankees since he joined the Red Sox last season, with 350 of his career saves coming over his 12 seasons as a member of the Dodgers.

“This is the best rivalry ever in the game to me,” Jansen said. “Yeah. So listen, man, I’m grateful to have played in the Dodgers-Giants rivalry and you can’t compare this one. This is so much different. It’s unbelievable.”