One fifth of the NASCAR Cup series grid for the 2018 Daytona 500 will start the race from the rear in their back-up cars.
Eight drivers lost their primary cars in Thursday night's Duel races, which took place to determine full grid positions after the first row was set in the first two qualifying sessions.
Penske's Brad Keselowski, who won Daytona's non-points Clash race last weekend, is one of several who will be sent to the back of the grid when the green lap is shown for the 500 due to a car swap prompted by Duel damage (pictured below).
New Stewart-Haas Racing driver Aric Almirola will join him, along with Hendrick Motorsports' William Byron and Jimmie Johnson (crash pictured above).
Chip Ganassi Racing's Kyle Larson, Matt DiBenedetto and David Gilliland will also drop to the back.
Under NASCAR rules, Keselowski, Almirola, DiBenedetto and Johnson would usually be sent to the rear of the grid at the next race at Atlanta too for taking new engines, but under what is known in the series as 'directors' discretion' they will not take that penalty.
The final practice sessions for the 500 will take place on Friday and Saturday with seven drivers serving 15-minute penalties on Friday.
Danica Patrick, ahead of her final NASCAR race, will be one of those sitting out a portion of the session for failing to make inspection on time.
Provisional Daytona 500 starting grid
|1||Alex Bowman||Hendrick Motorsports||Chevrolet|
|2||Denny Hamlin||Joe Gibbs Racing||Toyota|
|3||Ryan Blaney||Team Penske||Ford|
|4||Chase Elliott||Hendrick Motorsports||Chevrolet|
|5||Joey Logano||Team Penske||Ford|
|6||Kevin Harvick||Stewart-Haas Racing||Ford|
|7||Darrell Wallace Jr.||Richard Petty Motorsports||Chevrolet|
|8||Erik Jones||Joe Gibbs Racing||Toyota|
|9||Ricky Stenhouse Jr.||Roush Fenway Racing||Ford|
|10||Clint Bowyer||Stewart-Haas Racing||Ford|
|11||Kurt Busch||Stewart-Haas Racing||Ford|
|12||Kyle Busch||Joe Gibbs Racing||Toyota|
|13||Ryan Newman||Richard Childress Racing||Chevrolet|
|14||Austin Dillon||Richard Childress Racing||Chevrolet|
|15||David Ragan||Front Row Motorsports||Ford|
|16||Paul Menard||Wood Brothers Racing||Ford|
|17||Daniel Suarez||Joe Gibbs Racing||Toyota|
|18||Trevor Bayne||Roush Fenway Racing||Ford|
|19||Jamie McMurray||Chip Ganassi Racing||Chevrolet|
|20||A.J. Allmendinger||JTG Daugherty Racing||Chevrolet|
|21||Chris Buescher||JTG Daugherty Racing||Chevrolet|
|22||Michael McDowell||Front Row Motorsports||Ford|
|23||Ty Dillon||Germain Racing||Chevrolet|
|24||Martin Truex Jr.||Furniture Row Racing||Toyota|
|25||Brendan Gaughan||Beard Motorsports||Chevrolet|
|26||Kasey Kahne||Leavine Family Racing||Chevrolet|
|27||Jeffrey Earnhardt||StarCom Racing||Chevrolet|
|28||Danica Patrick||Premium Motorsports||Chevrolet|
|29||Justin Marks||Rick Ware Racing||Chevrolet|
|30||D.J. Kennington||Gaunt Brothers Racing||Toyota|
|31||Brad Keselowski||Team Penske||Ford|
|32||Corey LaJoie||TriStar Motorsports||Chevrolet|
|33||William Byron||Hendrick Motorsports||Chevrolet|
|34||Gray Gaulding||BK Racing||Toyota|
|35||Jimmie Johnson||Hendrick Motorsports||Chevrolet|
|36||Matt DiBenedetto||Go FAS Racing||Ford|
|37||Aric Almirola||Stewart-Haas Racing||Ford|
|38||Kyle Larson||Chip Ganassi Racing||Chevrolet|
|39||David Gilliland||RBR Enterprises||Ford|
|40||Mark Thompson||MBM Motorsports||Ford|