Drew Lock showed all the signs of having just finished an intense workout on Friday when he walked into the Giants’ locker room, stripped off his sweaty jersey and took a big drink to catch his breath.

Lock had just zero Repetitions with the starting offensive during training.

Same as it’s been all week — and same as the norm under head coach Brian Daboll, who believes one starter should take on the full workload — even as quarterback Daniel Jones’ job security is being questioned in all corners of the NFL.

So what’s going on?

Lock’s method of preparing his backup quarterback, which he adopted from the Broncos to the Seahawks to the Giants, is based less on mental reps and more on adopting the script Jones followed and going over the reps after practice with some teammates.

“To be able to make the throws, get the calls, send the changes and motions,” Lock said. “When you’re standing back there and not saying anything, not really doing anything, you can catch yourself saying, ‘What? Oh, I have to do a quiet (snap count). We have to play double-team here.’ I think that makes a big difference. Not to mention the footwork, and you have to find a way to fit all the throws that DJ has in the game plan.”

Lock played less than expected in the preseason after suffering an abdominal injury in the game against the Lions on August 12.

He was finally activated from the injured list this week – despite being a reserve player in Week 1 – and is ready to enter a game at any time if needed.

“Mentally, I’m very prepared,” Lock said. “I’ve set my system all week so that I feel good on game day. When my number is called or something happens, I’m ready to go. I’ve done that a lot of times before. It’s hard to have a plan and know how to be ready without doing (a lot) all week, but once you figure it out, it’s easy to do it.”

Lock runs the scout team offense to prepare the Giants’ defense while third quarterback Tommy DeVito works through the entire game plan on a separate field.

During the pass phases, Lock takes the offensive play sheet, but time is short.

In Seattle, Lock further developed his preparation routine by mirroring starter Geno Smith’s throws when running to receivers on the other side of the field.

He hopes that DeVito will adopt the idea of ​​the post-practice script in the future.

“I have a lot of confidence in Drew – that’s why we brought him in,” said quarterback coach Shea Tierney. “Throughout OTAs and training camp, I saw a really good quarterback and a guy who has been in the league for many years.”

Jones began his crucial season with the third-lowest single-game quarterback rating (44.3) of his career in a loss to the Vikings.

He missed open shots and completed just 22 of 42 passes, recording two interceptions (one of which led to a touchdown) and five sacks.

But Daboll never considered making a change at quarterback for Sunday’s game against the Commanders. How much room Jones has if the problems continue is unknown — not to mention that Jones has had to leave two of his last three games due to injury.

“You have to keep up with the pace of the game and know where you are in the game,” Lock said. “You have to be prepared for anything and everything. You can get into a tricky situation.”

Lock has also worn Jones’ shoes before. He was Denver’s starter from late 2019 to 2020 before losing the preseason contest to Teddy Bridgewater and beginning his odyssey as a backup in 2021.

“There is mutual respect between me and Daniel,” Lock said.

Of course Lock wants to play. But he knows that after a loss, it is his job to help Jones sort things out.

“The mental side of winning and losing, I’ve been in the shit,” Lock said. “It’s beneficial to have somebody there who knows what it feels like, who knows when to say something, when not to say something, who knows when I’d say, ‘Get out of my face.’ It’s part of my job to be a sounding board or a shrink or whatever I need to be.”

Jones and Tierney have been paying particular attention to Jones’ footwork this week, looking for corrections that could explain his drastic drop in performance since he began playing at a winning level in 2022.

Lock went home and told his wife about Jones’ engagement.

“He does everything a starting quarterback should do every week,” Lock said. “Last week you could have called it a regression, and this week I haven’t seen him blink. That’s impressive considering (the criticism) is mounting here in New York.”

If it reaches new heights, Lock could soon be next.