The odds were against NASCAR flawlessly executing its reopening plan, which was a potential standard-setting moment for other professional leagues to follow in this new normal of sports.

No plan is ever perfect and all the assistance from outside health officials couldn't protect NASCAR from the obvious flaw in its procedures: The system in large part is based on the honor code.

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Tires for driver Brad Keselowski are checked during the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

The odds were against NASCAR flawlessly executing its reopening plan, which was a potential standard-setting moment for other professional leagues to follow in this new normal of sports.

Cars pass by empty seats during the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Cloth over your face for 12 hours under the South Carolina sun is not ideal. Yet everyone complied Sunday at Darlington Raceway and NASCAR — a series often criticized for being consistently inconsistent and making up rules on the fly — successfully staged a spectator-free event.

Gas cans for driver Ryan Newman are pulled through the pit area before the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

If NASCAR had not set staggered arrival times, the system could have broken right there with 900-something vehicles trying to enter at the same time. Instead, every entrant had their forehead scanned, temperature logged on a list and not a single person was turned away.

Tires are checked by a crew member for driver Erik Jones before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

There was no other choice for NASCAR, now in a survival mode approach to get cars back on the track. Money can’t be made if races aren’t run and a shutdown since March 13 wounded every area of the industry.

Crew members for driver Kyle Busch talk in pit row before the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Kevin Harvick had no true victory celebration for his 50th career win. On the desolate frontstretch, he noted the eerie silence of the empty grandstands in an “awkward” post-race session with Regan Smith, the only Fox Sports reporter sent to the track.

The grandstands in Darlington Raceway sit empty before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

The effort must continue to keep the engines running. NASCAR has eight more Cup Series races scheduled over the next 35 days and it includes three Wednesday night races. The Cup cars last ran on a Wednesday in 1984, Richard Petty’s 200th and final victory.

Driver Ryan Newman gets his temperature taken as he arrives at Darlington Raceway before the Real Heroes 400 NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. NASCAR, which has been idle for 10 weeks because of the coronavirus pandemic, makes its return at the track Sunday. (AP PhotoJenna Fryer)

“It would have been really, really easy to just say, ‘We will wait for the NHL, NFL or NBA to be the guinea pigs.’ (NASCAR) didn’t take that attitude and I have a lot of respect for them making that decision.”

Driver Michael McDowell walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Driver Michael McDowell walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

CORRECTS TO  JOHN HUNTER NEMECHEK INSTEAD OF MICHAEL MCDOWELL  - Driver John Hunter Nemechek walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

CORRECTS TO JOHN HUNTER NEMECHEK INSTEAD OF MICHAEL MCDOWELL - Driver John Hunter Nemechek walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

A sport with a storied history of cheating, lying and sometimes stealing in the name of winning expects its participants to tell the truth if they aren't feeling well, practice social distancing at the track and at the shop, and wear face masks.

Tires for driver Brad Keselowski are checked during the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Tires for driver Brad Keselowski are checked during the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Cloth over your face for 12 hours under the South Carolina sun is not ideal. Yet everyone complied Sunday at Darlington Raceway and NASCAR — a series often criticized for being consistently inconsistent and making up rules on the fly — successfully staged a spectator-free event.

“They pulled this thing off and it feels a little like a Christmas miracle,” said driver Brad Keselowski.

Things could have gone awry starting at sunrise when crews pulled off through an obscure entrance and into a gravel lot. Officials with clipboards and thermometers waited ahead.

Cars pass by empty seats during the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Cars pass by empty seats during the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

If NASCAR had not set staggered arrival times, the system could have broken right there with 900-something vehicles trying to enter at the same time. Instead, every entrant had their forehead scanned, temperature logged on a list and not a single person was turned away.

NASCAR is not testing for COVID-19 but believes its social-distancing protocols ease the risks.

“I think everybody found their groove,” said NASCAR executive vice president Steve O’Donnell. “Didn’t have to tell anyone or remind anyone to wear a mask. I think the industry really came together and did a tremendous job to enable us to get to the race.”

Gas cans for driver Ryan Newman are pulled through the pit area before the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Gas cans for driver Ryan Newman are pulled through the pit area before the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

There was no other choice for NASCAR, now in a survival mode approach to get cars back on the track. Money can’t be made if races aren’t run and a shutdown since March 13 wounded every area of the industry.

Team owners stopped receiving sponsorship checks, promoters had nothing to promote and crew members took pay cuts, lost bonuses or were furloughed.

Wallets already hit, few seemed daring enough to mess this up for themselves or the sport.

Tires are checked by a crew member for driver Erik Jones before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Tires are checked by a crew member for driver Erik Jones before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Kevin Harvick had no true victory celebration for his 50th career win. On the desolate frontstretch, he noted the eerie silence of the empty grandstands in an “awkward” post-race session with Regan Smith, the only Fox Sports reporter sent to the track.

“Usually you get out of the car and the crowd is screaming and yelling,” said Harvick, adding he was unsure what to do. “You’ve got Regan from Fox six feet away, a masked man, I didn’t know if I was supposed to put a mask on and talk to him.”

Harvick noted his team didn't get a chance to celebrate with the car, but "in the big picture of things, being able to do what we did — and that’s race — is what everybody wants to do.”

Crew members for driver Kyle Busch talk in pit row before the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Crew members for driver Kyle Busch talk in pit row before the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

The effort must continue to keep the engines running. NASCAR has eight more Cup Series races scheduled over the next 35 days and it includes three Wednesday night races. The Cup cars last ran on a Wednesday in 1984, Richard Petty’s 200th and final victory.

It’s a heavy workload for race teams and stamina will be tested for drivers now running multiple times a week. But in getting past the first test, there is hope.

“This was a really big moment for the sport to be able to pull this off,” said Keselowski. "Up until probably two or three hours before the race I was ready for something to go wrong. Like, alright, what is it going to be? Is someone going to be sick? Is there going to be somebody boycotting outside the race track? Nobody did. Nothing bad happened.

The grandstands in Darlington Raceway sit empty before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

The grandstands in Darlington Raceway sit empty before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

“It would have been really, really easy to just say, ‘We will wait for the NHL, NFL or NBA to be the guinea pigs.’ (NASCAR) didn’t take that attitude and I have a lot of respect for them making that decision.”

Driver Ryan Newman gets his temperature taken as he arrives at Darlington Raceway before the Real Heroes 400 NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. NASCAR, which has been idle for 10 weeks because of the coronavirus pandemic, makes its return at the track Sunday. (AP PhotoJenna Fryer)

Driver Ryan Newman gets his temperature taken as he arrives at Darlington Raceway before the Real Heroes 400 NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. NASCAR, which has been idle for 10 weeks because of the coronavirus pandemic, makes its return at the track Sunday. (AP PhotoJenna Fryer)

Driver Michael McDowell walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

Driver Michael McDowell walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

CORRECTS TO  JOHN HUNTER NEMECHEK INSTEAD OF MICHAEL MCDOWELL  - Driver John Hunter Nemechek walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)

CORRECTS TO JOHN HUNTER NEMECHEK INSTEAD OF MICHAEL MCDOWELL - Driver John Hunter Nemechek walks to his car before the start of the NASCAR Cup Series auto race Sunday, May 17, 2020, in Darlington, S.C. (AP PhotoBrynn Anderson)