ALLEN PARK — Amon-Ra St. Brown endured a true game-time decision type of week to be able to play against the Dallas Cowboys last Thursday.

St. Brown suffered an ankle sprain that kept him out for most of the Thanksgiving game the previous week. The All-Pro wide receiver didn’t practice all week leading into the game against the Cowboys, with everyone saying that if he can play, then he will.

But there were concerns about St. Brown’s ability to cut and handle his plentiful route tree with the injury.

And Scottie Montgomery, the team’s wide receivers and assistant head coach, said he was “critically concerned” about St. Brown’s status as of Wednesday.

“St. Brown — Like, I don’t — You know, we don’t talk about it enough, but I don’t have anything else to say about it because it’s consistently the same all the time,” Montgomery said on Wednesday. “I was really concerned about his ability to play in the game on Wednesday or whatever day it was — critically concerned about his ability to play in the game.

“And (then) Thursday went out and put together a performance that was not only strong, but it was just one of those deals that our team needed to see our leader on the field. And I think those guys responded to it in a great way.”

Not knowing whether St. Brown was available adds a ton of pressure to the planning aspect based on all of the jobs and the number of snaps St. Brown handles. Montgomery added that they were doing everything to keep the star wide receiver mentally ready to play, even if they weren’t sure he would.

Jared Goff said that he truly believed it was a 50-50 scenario all week concerning St. Brown. Then he went through pre-game workouts and told everyone, “I’m playing. I’m playing. I’m playing,” and that was that.

Montgomery put that into perspective by telling the story about how he was FaceTiming with St. Brown about the game plan while the wide receiver was out to eat with his girlfriend on Tuesday night. They were uncertain he’d be able to go, but everyone was doing everything they could to be ready if he got clearance.

“Well, I’ll tell you how devoted he is, it is kind of crazy, you know, Tuesday … and he was at dinner with his girlfriend, Brooklyn,” Montgomery said. “I’m on FaceTime with him, going through the plan, as it may change. He’s at dinner and not at home, you know, and I felt bad. He kind of had the phone close to his face, so I couldn’t see. Then he kind of backed up a little bit, and I realized, ‘Oh, my God, I’m coaching this guy at dinner.

“So we went through the plan and how it may change. You know, him moving positions, other guys moving positions. And that’s the other piece to it. The other layers to it is when he does come back into the fold now, you got to kind of move people around.”

Montgomery added that Tuesday and Wednesday were some difficult planning days. They count on offensive assistant Bruce Gradkowski to draw most of the plays on the board. And with all the changes and other layers to the week hinging on St. Brown, Montgomery added that “He’s probably still upset with more for Tuesday or Wednesday. But he got it done.”

“They say you don’t stop until the hay is in the barn,” Montgomery said. “There’s no hay, and there’s no barn. You just keep freaking going, man.”

St. Brown and the Lions certainly got it done. The offense dropped 44 points in their win over the Cowboys to breathe life into their playoff chances. St. Brown had six catches for 92 yards, helping set up two key touchdowns with big plays in the victory.

He was back at practice on Wednesday, signaling there were no setbacks as he’s ready to keep pushing through these final four games.

“St. Brown is what we are. He’s what we are. That guy is — where he goes, we go,” Lions coach Dan Campbell said after the win over the Cowboys. “His toughness and his will power, his desire to compete, to help those guys around him, to do whatever it takes to win, is second to none. He is rare, man.

“Nobody was going to talk him out of not playing … Yes, his teammates feed off of that.”