The way the numbers tumble might leave Tyrone Tracy Jr. off the Giants roster.

The third-year running back was guilty of one very poor play in each of the first two preseason games.

The head coach acknowledges that and also insists Tracy’s bad and good must be scrutinized before a decision is made.

“Well, I don’t think you say, ‘Hey, a bad play or even two bad plays nullifies a whole career body of work,’ so to speak,” John Harbaugh said Sunday. “And even in the game, he played well. He had numerous good runs, catches, pass protection pickups were good, but he had the one play that’s the one thing you don’t want to have as a running back. And in the last two games, he’s had two things you don’t want to have.”

The “one play’’ on the very negative side in Saturday’s 26-3 preseason victory over the Dolphins was an unforced fumble on the Miami 10-yard line late in the first quarter.

In the preseason-opening loss to the Vikings, Tracy completely whiffed picking up a blitz, leading to Jaxson Dart taking a huge hit that sent him into the medical tent for observation.

“Nobody feels worse about it than he does,” Harbaugh said of the two gaffes. “I mean, he’s a very conscientious, very determined guy. It matters a lot to him, so he’s beating himself up. But the rest of the plays were all good. They were all pluses. So, you don’t hold it against him. At the same time, you understand how valuable and important those things are to your football team, and he knows as well. So, it’s just a balancing act that way.

“It’s an ongoing pecking order. It’s ongoing right now. It’s still to be determined over the course of the next week to see exactly where it shakes out, and we’ll keep working at it.”

With Cam Skattebo, Devin Singletary and newly signed veteran Najee Harris all ahead of him, Tracy faces long odds to stick on the roster.

It is rare to see a rookie destined to make the team stay on the field for all 81 snaps in a preseason game but that is what J.C. Davis did in Miami Gardens.

He started and finished at left tackle.

This was a plan by the coaching staff to see if Davis — a sixth-round pick from Illinois — could do it.

He did it, another impressive step for the 22-year-old.

“Going into the week, we decided to see — to put him into that situation to see how he handled it and also to help him grow into the ability to do it,” Harbaugh said. “Can you play a whole game at left tackle in the National Football League? Preseason game, albeit, but still a game. And he did it, he did it well. He had a lot of plus plays, he graded out very well and that’s a big step in his development for sure.”

WR Malik Nabers, continuing his return from ACL surgery, might shed his red “no-contact” jersey this week, although Harbaugh said “I don’t think it’s a necessity,” given that the season opener is still three weeks away. … Harbaugh said rookie CB Colton Hood (quad) will return to practice this week, as will rookie RG Sisi Mauigoa (stinger).