The Los Angeles Rams and Chargers have shown off their future new home rising from a very deep hole in suburban Inglewood.

The teams on Wednesday gave news media a hard-hat tour of the stadium construction site about 10 miles southwest of downtown Los Angeles and not far from the eastern approach to Los Angeles International Airport’s two northern runways.

A massive amount of earth has been moved, foundational pillars are rising and some structures are beginning to take shape.

“We have completed the mass excavation, which is actually the digging of the hole, if you will, and we’re bringing the buildings up out of the hole,” said Robert Aylesworth Jr., who is in charge of stadium construction.

The project backed by billionaire Rams owner Stan Kroenke was a prime factor in the league’s decision to allow the Rams to move from St. Louis, returning the NFL to Los Angeles after a 21-year absence from the nation’s second-largest market. The Chargers then exercised their opportunity to join the Rams in Los Angeles. The stadium complex will also include a hotel, retail space, office space and a 6,000-seat entertainment venue.

“The proximity to LAX created the necessity to push the building in the ground 100 feet,” Aylesworth said. “Normally, a football stadium would be in the ground maybe 30 feet but we’re in the ground 100 feet, so the race has been dig to the bottom and then start your way back up.”

The $2.6 billion, 70,000-seat stadium originally was supposed to open for the 2019 NFL season but heavy rains last year delayed excavation and it’s now expected to open in 2020.

“We’re on target to open in 2020,” Aylesworth said, but added that the project faces competition for labor by the end of this year and 2019 as large projects open up at the airport and elsewhere in the greater Los Angeles area. “So we’re pushing hard right now in every way we can to get as much done, but typically the manpower at the end of the project increases pretty dramatically because you’re doing things like painting, floor finishes, millwork and that kind of stuff and it just takes more people to do it,” he said.

In the meantime, the Rams are playing in Los Angeles Memorial Coliseum and the Chargers in tiny StubHub Center in suburban Carson.

Bradford feared career could be over • The worst-case scenario fear surfaced in Sam Bradford’s mind at midseason, in the aftermath of the 30-year-old quarterback’s latest surgery on his left knee.

This procedure was an arthroscopic cleanup, not another reconstruction, but that didn’t quiet the question about whether he’d be able to resume his career.

“That was a battle I fought for a few weeks,” Bradford said. “But it seemed like each day where it got better, each week where it felt like I was making true progress and could do a little bit more, those thoughts started to leave my mind. I started to become more confident in how I felt on my knee and what I was able to do.”

Bradford returned to practice with the Minnesota Vikings this week, the earliest he was eligible to do so after being placed on injured reserve on Nov. 8. The club can put him on the active roster for the playoffs at any time, with a decision required by Jan. 23 if they advance to the Super Bowl.

He probably would only be the second or third option at that point behind Case Keenum and Teddy Bridgewater, but is upbeat.

“I’ve been working extremely hard to be able to get back out there, and so just to be out there and be able to go through these two practices, it’s been great,” Bradford said on Wednesday in his first mass interview in three months. “I think we’re still just taking it one day at a time.”

Bradford tore an ACL in 2013 and 2014 when he was with the St. Louis Rams, who took him with the first pick of hte 2010 draft. He performed brilliantly for the Vikes in a season-opening win over the Saints, in which he aggravated the knee.

Keenum started the next three games, until Bradford was cleared to start on Oct. 9. He hobbled in the first half against the Bears before giving way to Keenum late in the second quarter, this time for good.

Bradford kept up a behind-the-scenes presence with the Vikings throughout his rehabilitation, assisting Keenum with the game-planning and attempting to remain engaged with the team during its run to a 13-3 regular season record and a first-round bye for the playoffs.

“I know it’s been a hard year for him battling that knee, so it’s good to see him out there feeling good,” tight end Kyle Rudolph said.

The what-could-have-been feelings were inevitable for Bradford, given the team’s success without him, but calling it career before all options were exhausted was not entertained even with career earnings well over $100 million.

“You realize how special it is to be on the field with your teammates, being able to compete out there in the National Football League,” Bradford said.

“That’s one of the greatest honors there is. I think once you have a taste of that feeling, it’s really hard to let it go. I think for everyone, it’s what drives you to come back.”

Rudolph, for his part, pushed through a sprained right ankle over the past three games.

“I can’t tell you what Plan B would’ve been had we had to play a game this week. I just would’ve been out there and been a terrible football player like I have been for the last three weeks,” Rudolph said. “Getting to this week off is big for me.”

McCoy still out • Bills running back LeSean McCoy missed practice Wednesday because of a right ankle injury and it’s uncertain whether he can play Sunday, at Jacksonville, in Buffalo’s first playoff game in 18 years.

Coach Sean McDermott would only list the Bills’ top offensive threat as day to day and declined to say if McCoy will practice at all this week. McCoy, who was injured while playing last weekend, leads Buffalo in rushing, catches and touchdowns.

Coaching interviews • The Giants started the interview process for their head coaching job by starting with Steve Spagnuolo, who has been their interim coach. Spagnuolo, a former Rams coach who went 10-38 in three St. Louis seasons, posted a 1-3 record after being promoted from defensive coordinator to replace the fired Ben McAdoo on Dec. 4. They also plan to talk to Vikings offensive coordinator Pat Shurmur, Patriots coordinators Josh McDaniels and Matt Patricia, Broncos assistant Eric Studesville and Eagles defensive coordinator Jim Schwartz.

• The Lions interviewed Texans defensive coordinator Mike Vra. Detroit also has interviewed its current defensive and offensive coordinators, Teryl Austin and Jim Bob Cooter.

• The Bears interviewed their defensive coordinator, Vic Fangio.

Elsewhere • The Packers said defensive coordinator Dom Capers, defensive line coach Mike Trgovac and inside linebacker Scott McCurley won’t be back.

• Bills running back LeSean McCoy (ankle) missed practice Wednesday.