Ryan McDonagh, the Rangers’ No. 1 defenseman, continued his climb back toward the lineup on Wednesday, practicing with the team while wearing a non-contact yellow jersey.

McDonagh will miss his fourth straight game on Thursday when the Blueshirts host the last-overall Sabres, as he is still recovering from the left-shoulder injury suffered April 1 in Vancouver. Coach Alain Vigneault had said McDonagh would need at least one full practice, with contact, before being placed back in.

That could come Friday in preparation for the regular-season finale in Montreal on Saturday, although Vigneault was still unsure if he would play McDonagh in that game even if he were ready.

Tuesday morning, Vigneault called that possibility “50-50.” Continuing his coyness concerning injuries around playoff time — including McDonagh not being made available to the media — he stuck with that assessment.

“We’ll still say we’re 50-50,” Vigneault said. “I still think we’re pretty good.”

There was one tidbit of information Vigneault did disclose, and that was there is a chance Henrik Lundqvist won’t play in Montreal, a place where he has historically struggled.

“I know he’s playing [Thursday],” Vigneault said, “and if I was a betting man, in Montreal, I’d say it’s 50-50.”

Amidst much laughter, he then left the interview room.