Kimi Raikkonen and Jenson Button improved on their Friday showings as they qualified for Sunday's NASCAR Cup Series race at COTA (Circuit of the Americas) in Austin, Texas.
The two former F1 world champions added further lustre to a star-studded field for Sunday's EchoPark Automotive Grand Prix (3.30pm ET, FOX).
Both managed to produce upgrades on what they delivered in practice on Friday, with Raikkonen jumping 10 places to qualify in 22nd after being 32nd of 39 cars on Friday.
Button, making his Cup Series debut, was 28th on Friday and he improved to 24th on the grid for Sunday's race.
William Byron will start from pole on Sunday after pipping Tyler Reddick - who had set the pace in practice on Friday.
Seven-time Cup Series champion Jimmie Johnson qualified 31st after another tough afternoon in his return to NASCAR action.
NASCAR Cup Series lineup & grid at COTA
The lineup for Sunday's race is as follows after William Byron claimed pole on Saturday. Raikkonen and Button qualified 22nd and 24th respectively:Row 1
1. William Byron, No. 24 Hendrick Motorsports Chevrolet
2. Tyler Reddick, No. 45 23XI Racing Toyota
3. Austin Cindric, No. 2 Team Penske Ford
4. Jordan Taylor, No. 9 Hendrick Motorsports Chevrolet
5. Daniel Suarez, No. 99 Trackhouse Racing Chevrolet
6. Alex Bowman, No. 48 Hendrick Motorsports Chevrolet
7. AJ Allmendinger, No. 16 Kaulig Racing Chevrolet
8. Erik Jones, No. 43 Legacy Motor Club Chevrolet
9. Kyle Busch, No. 8 Richard Childress Racing Chevrolet
10. Noah Gragson, No. 42 Legacy Motor Club Chevrolet
11. Bubba Wallace, No. 23 23XI Racing Toyota
12. Ross Chastain, No. 1 Trackhouse Racing Chevrolet
13. Kyle Larson, No. 5 Hendrick Motorsports Chevrolet
14. Christopher Bell, No. 20 Joe Gibbs Racing Toyota
15. Joey Logano, No. 22 Team Penske Ford
16. Harrison Burton, No. 21 Wood Brothers Racing Ford
17. Ty Gibbs, No. 54 Joe Gibbs Racing Toyota
18. Ricky Stenhouse Jr., No. 47 JTG Daugherty Racing Chevrolet
19. Chase Briscoe, No. 14 Stewart-Haas Racing Ford
20. Michael McDowell, No. 34 Front Row Motorsports Ford
21. Denny Hamlin, No. 11 Joe Gibbs Racing Toyota
22. Kimi Raikkonen, No. 91 Trackhouse Racing Chevrolet
23. Justin Haley, No. 31 Kaulig Racing Chevrolet
24. Jenson Button, No. 15 Rick Ware Racing Ford
25. Martin Truex Jr., No. 19 Joe Gibbs Racing Toyota
26. Ryan Preece, No. 41 Stewart-Haas Racing Ford
27. Corey Lajoie, No. 7 Spire Motorsports Chevrolet
28. Austin Dillon, No. 3 Richard Childress Racing Chevrolet
29. Kevin Harvick, No. 4 Stewart-Haas Racing Ford
30. Brad Keselowski, No. 6 Roush Fenway Keselowski Racing Ford
31. Jimmie Johnson, No. 84 Legacy Motor Club Chevrolet
32. Chris Buescher, No. 17 Roush Fenway Keselowski Racing Ford
33. Josh Bilicki, No. 78 Live Fast Motorsports Chevrolet
34. Ty Dillon, No. 77 Spire Motorsports Chevrolet
35. Conor Daly, No. 50 TMT Racing Chevrolet
36. Todd Gilliland, No. 38 Front Row Motorsports Ford
37. Cody Ware, No. 51 Rick Ware Racing Ford
38. Ryan Blaney, No. 12 Team Penske Ford
39. Aric Almirola, No. 10 Stewart-Haas Racing Ford
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