When Alain Vigneault said earlier this week the Rangers need more from their top players, the coach was not only talking about the club’s forwards.

“The only one on ‘D,’ in my opinion, that has really not only has played up to expectations but you see a lot of upswings with is [Ryan] McDonagh,” Vigneault said Thursday morning, hours before the Blueshirts defeated the dreadful Sabres, 3-1. “All of the other guys, I think, have better to give.

“We’re going to need them to give better.”

If the coach needs more from his top defensemen, he said the bottom three blue-liners — John Moore, Michael Del Zotto and Justin Falk — had failed to make the case to move up in the lineup.

“None of those three have proven they can be on the top two pairs,” Vigneault said. “The one that has proven that he is the closest is John Moore.

“John had maybe a little patch of more difficulties the last few games there, but he is a very young player with, in our minds, a tremendous amount of upside. If anybody would show us they deserve to play ahead of [our top four], I’d give them the ice time, but nobody has really come up and played better than those guys.”

Moore had been scratched from each of the previous two games before returning to the lineup against the Sabres while Falk sat out in favor of Del Zotto.