Regarding the Rangers, who have one more game to go on Wednesday at the Garden against the Flyers, before going on their third — count ’em — third winter vacation of the season. What is this, school?

1. There was a notable physical edge to the Blueshirts in Monday’s 3-2 victory over the Kings, continuing an encouraging trend that has been developing over the last week to 10 days.

For when Kevin Klein stepped in and dropped the gloves in support of Mats Zuccarello after the Norwegian had been properly accosted by Los Angeles defenseman Brayden McNabb for his extra dig or two for the puck under goaltender Jeff Zatkoff’s glove at 17:18 of the first period, it marked the third time in four games a Ranger had responded to a teammate’s distress.

When Jesper Fast was blindsided without the puck in open ice by Andrew Shaw in Montreal late in the first period on Jan. 14, J.T. Miller swooped in to fight the Canadiens forward, who was assessed a major and game misconduct for interference. For some unknown reason, Miller escaped an instigator penalty, but the response would have been worthwhile even if it had cost the winger 2-plus-10 in the box.

Then, a game later on Jan. 17 at the Garden, Chris Kreider fought with Cody Eakins in responding to the Stars’ winger’s unavenged steamrolling headshot on Henrik Lundqvist in Dallas on Dec. 15.

And then on Monday, Klein, who earlier this season had provided a similar function by stepping in for Zuccarello when the winger had become engaged with Chris Neil after the notorious Ottawa hitman had plowed Brady Skjei into the boards at the Garden on Dec. 27.

That response stood out as an exception, but now the Rangers — who competed relentlessly for pucks against L.A. and crowded Zatkoff the way the opposition generally has been allowed to get away with doing to Lundqvist and Antti Raanta — seem to be following hockey’s golden rule of doing unto others as they’ve done unto them.

Klein, no heavyweight by the way, leads the Rangers with 14 career fighting majors (per hockeyfights.com), including a pair early in the 2014-15 season against the Canadiens’ Brandon Prust. The first was a response to a blow that knocked down an off-balance Zuccarello and the next was a reply to the Blueshirts’ one-time heart-and-soul guy for running over Lundqvist while the goaltender was out of the crease attempting to play the puck.

2. Interestingly, the Rangers did not respond when Buffalo’s Derek Grant (since waived to Nashville) caught Jimmy Vesey with his head down fishing for the puck after making a move across the line and sent the rookie flying with a legal blow in the third period of a Jan. 3 match at the Garden.

Cause and effect, maybe or maybe not at all, but Vesey has all but disappeared since that incident. Harvard has not only failed to pick up a point in the eight games that have followed but he also has been a non-factor on the forecheck and in the dirty areas in which he had made a considerable impact through the first three months.

3. And so, in the latest episode of Who Comes Out?, it is possible that Vesey, instead of popular candidates Brandon Pirri and Matt Puempel, could become a casualty if and when the Blueshirts become completely healthy up front.

Because on Monday, when Kreider and Pavel Buchnevich had a series of disappointing shifts through the early portion of the second period, coach Alain Vigneault did not hesitate to pull the trigger and elevate Pirri — a first power-play staple — and Puempel from the fourth line into top six slots the remainder of the match.

Puempel — the real Matty Ice, never mind that Atlanta QB — appears to be the Rangers’ most significant waiver acquisition since Erik Christensen, who became the club’s No. 1 center for a couple of seasons after his claim from Anaheim in December 2009.

Waived by Ottawa in late November after he’d been the Senators’ first-round selection at 24th overall in the 2011 draft, the skilled, slick winger has recorded six goals in 14 games as a Ranger while getting 10:18 per, including the 2-on-1 Derek Stepan feed he converted on Monday upon his return from his second concussion within a month. Not too shabby.