Libor Hajek was recalled from his voluntary two-week conditioning assignment with the AHL Wolf Pack on Sunday, but the 23-year-old defenseman was in a familiar spot for the Rangers’ 5-4 buzzer-beater victory over the Sabres at the Garden later in the day.

Which was, watching in street clothes as a healthy scratch for the 13th time in the 13 games Hajek has been on the NHL roster this season.

“Day-by-day,” coach Gerard Gallant said when asked if Hajek might actually get into an NHL game. “He skated this morning. We’ll see where it goes.”

Hajek, the principal piece in return in the Ryan McDonagh/J.T. Miller trade at the 2018 deadline, played five games for the Wolf Pack during his stay while paired primarily with Zac Jones.

Gallant did make one change on the blue line for this one, inserting Jarred Tinordi into the lineup while Nils Lundkvist took a seat. Tinordi, playing in his fifth game, had been scratched for the previous five straight and for 13 games overall.

Tinordi, who got 11:45 of ice time but did not get a shift over the final 9:45, was victimized early in the second period by Vinny Hinostroza, who took the puck off No. 5’s stick high in the defensive zone before sweeping in to beat Alex Georgiev up top for a 2-1 lead at 2:26.

This marked the fifth healthy scratch for Lundkvist, who has recorded two assists in his first 13 NHL contests while paired almost exclusively with Patrik Nemeth on the third tandem.

Filip Chytil and Kaapo Kakko continued to elevate their respective games, with Chtyil dancing, creating and taking the puck to the net. Kakko scored off a gorgeous move through the right circle while seeming to find a far greater comfort level on the right side with Artemi Panarin and Ryan Strome.

“They’re both playing well. Chytil had a couple of great chances, obviously driving the net,” Gallant said. “Their games are coming up and that’s exactly what we need to be a good team.”

Ryan Lindgren, who crept in to convert a gorgeous feed from Mika Zibanejad at the left doorstep with 0.7 on the clock, became the fourth defenseman in NHL history to score a go-ahead goal in the final second of regulation.

This also marked the fourth time in franchise history the team had scored the go-ahead goal in the final second of the third period.

Chris Kreider recorded his 13th goal and seventh on the power play. The Rangers’ first unit has been on for all 10 of the club’s five-on-four power-play goals.

Artemi Panarin collected three assists.

Zibanejad, who had been tripped without a call in the neutral zone preceding the rush that produced the winning goal, was screaming at the officials from the bench after Lindgren scored. Gallant intervened.

“He thought there should have been a penalty,” the coach said. “I just told him, ‘Mika, there’s [0.7] seconds left, the game’s over, leave the referee alone.’ ”

The Rangers and Sabres combined to score four goals — on four shots — within a span of 1:22 midway through the second period.

Kakko scored for a 3-2 lead at 12:07, Tage Thompson tied it at 12:57, Rasmus Dahlin put the Sabres ahead 4-3 at 13:12, but K’Andre Miller came back to knot it again at 13:29.

This was the fastest four goals in an NHL game since the Wild and Sharks struck four times within 1:03 on March 21, 2017.

Gallant flipped Dryden Hunt and Barclay Goodrow starting midway through the second, thus moving Hunt up with Zibanejad and Kreider while Goodrow skated with Kevin Rooney and Ryan Reaves.

“I thought we were flat,” said Gallant, who added that he wanted to get Goodrow into the middle of the fourth line. “I wanted to change our lineup a little bit, to be honest, and I liked what I saw so we stayed with that for most of the game.”

The coach said that he would consider keeping Hunt on that top unit.

“I don’t know what we’re going to do next game but I definitely like it,” he said. “Huntsy has played different roles, but I like what he brings. He’s got some offensive touch and he can really shoot a puck, so it could be a possibility for sure.”