Danica Patrick lived up to her prediction that she could challenge for Daytona 500 pole by leading Saturday's practice sessions.
The two sessions were the first time that the full 2013 NASCAR Sprint Cup field had been on track together, following Friday's running for the 19 drivers eligible for the Sprint Unlimited exhibition race.
With drivers focusing on qualifying setups ahead of Sunday's Daytona 500 front row-deciding session, Saturday featured single-car runs rather than pack drafting.
Joey Logano had been fastest for his new employer Penske in opening practice, followed by Richard Childress Racing's rookie Austin Dillon. Patrick was third quickest, then hit the front in the second session.
She led team boss Tony Stewart in a Stewart-Haas Chevrolet 1-2, but her 45.867-second lap was the only sub-46s time of the day, with Stewart 0.201sec adrift. The same margin covered the next 10 cars.
There was no repeat of the crashes that occurred in January testing or Unlimited practice, with an engine failure for Juan Pablo Montoya in the second session causing the sole interruption.
The Unlimited race takes place on Saturday night, with Daytona 500 qualifying scheduled for Sunday afternoon.
Practice one times:
Pos Driver Team/Car Time Gap
1. Joey Logano Penske Ford 46.057s
2. Austin Dillon Childress Chevrolet 46.064s + 0.007s
3. Danica Patrick Stewart-Haas Chevrolet 46.069s + 0.012s
4. Paul Menard Childress Chevrolet 46.112s + 0.055s
5. Jeff Burton Childress Chevrolet 46.133s + 0.076s
6. Kasey Kahne Hendrick Chevrolet 46.144s + 0.087s
7. Trevor Bayne Wood Brothers Ford 46.196s + 0.139s
8. Juan Pablo Montoya Earnhardt Ganassi Chevrolet 46.204s + 0.147s
9. Dale Earnhardt Jr Hendrick Chevrolet 46.212s + 0.155s
10. Kyle Busch Joe Gibbs Toyota 46.226s + 0.169s
11. Tony Stewart Stewart-Haas Chevrolet 46.237s + 0.180s
12. Kevin Harvick Childress Chevrolet 46.251s + 0.194s
13. Jimmie Johnson Hendrick Chevrolet 46.276s + 0.219s
14. Kurt Busch Furniture Row Chevrolet 46.329s + 0.272s
15. Ricky Stenhouse Jr Roush Fenway Ford 46.340s + 0.283s
16. Matt Kenseth Joe Gibbs Toyota 46.350s + 0.293s
17. Casey Mears Germain Ford 46.354s + 0.297s
18. Mark Martin Waltrip Toyota 46.364s + 0.307s
19. Josh Wise Front Row Ford 46.368s + 0.311s
20. Denny Hamlin Joe Gibbs Toyota 46.375s + 0.318s
21. Clint Bowyer Waltrip Toyota 46.380s + 0.323s
22. Carl Edwards Roush Fenway Ford 46.382s + 0.325s
23. Jamie McMurray Earnhardt Ganassi Chevrolet 46.391s + 0.334s
24. Marcos Ambrose Petty Ford 46.391s + 0.334s
25. Ryan Newman Stewart-Haas Chevrolet 46.400s + 0.343s
26. Scott Speed Leavine Ford 46.400s + 0.343s
27. Aric Almirola Petty Ford 46.402s + 0.345s
28. Jeff Gordon Hendrick Chevrolet 46.446s + 0.389s
29. Regan Smith Phoenix Chevrolet 46.466s + 0.409s
30. Greg Biffle Roush Fenway Ford 46.478s + 0.421s
31. Brad Keselowski Penske Ford 46.487s + 0.430s
32. Michael Waltrip Swan Toyota 46.497s + 0.440s
33. David Gilliland Front Row Ford 46.532s + 0.475s
34. David Ragan Front Row Ford 46.545s + 0.488s
35. Martin Truex Jr Waltrip Toyota 46.618s + 0.561s
36. Terry Labonte FAS Lane Ford 46.711s + 0.654s
37. Michael McDowell Parsons Ford 46.818s + 0.761s
38. JJ Yeley Baldwin Chevrolet 46.891s + 0.827s
39. Bobby Labonte JTG Daugherty Toyota 46.909s + 0.840s
40. Dave Blaney Baldwin Chevrolet 47.251s + 1.139s
41. David Reutimann BK Toyota 47.375s + 1.242s
42. Joe Nemechek NEMCO-JRR Toyota 47.473s + 1.329s
43. Mike Bliss Humphrey Smith Chevrolet 47.847s + 1.651s
44. Travis Kvapil BK Toyota 48.920s + 2.716s
Practice two times:
Pos Driver Team/Car Time Gap
1. Danica Patrick Stewart-Haas Chevrolet 45.867
2. Tony Stewart Stewart-Haas Chevrolet 46.068 + 0.201
3. Kyle Busch Joe Gibbs Toyota 46.073 + 0.206
4. Dale Earnhardt Jr Hendrick Chevrolet 46.130 + 0.263
5. Jamie McMurray Earnhardt Ganassi Chevrolet 46.159 + 0.292
6. Trevor Bayne Wood Brothers Ford 46.189 + 0.322
7. Paul Menard Childress Chevrolet 46.198 + 0.331
8. Ryan Newman Stewart-Haas Chevrolet 46.212 + 0.345
9. Joey Logano Penske Ford 46.238 + 0.371
10. Jeff Burton Childress Chevrolet 46.240 + 0.373
11. Matt Kenseth Joe Gibbs Toyota 46.245 + 0.378
12. Jimmie Johnson Hendrick Chevrolet 46.271 + 0.404
13. Marcos Ambrose Petty Ford 46.282 + 0.415
14. Denny Hamlin Joe Gibbs Toyota 46.286 + 0.419
15. Martin Truex Jr Waltrip Toyota 46.290 + 0.423
16. Kasey Kahne Hendrick Chevrolet 46.300 + 0.433
17. Casey Mears Germain Ford 46.322 + 0.455
18. Greg Biffle Roush Fenway Ford 46.332 + 0.465
19. Jeff Gordon Hendrick Chevrolet 46.344 + 0.477
20. Clint Bowyer Waltrip Toyota 46.395 + 0.528
21. Mark Martin Waltrip Toyota 46.396 + 0.529
22. Carl Edwards Roush Fenway Ford 46.397 + 0.530
23. Regan Smith Phoenix Chevrolet 46.413 + 0.546
24. Aric Almirola Petty Ford 46.435 + 0.568
25. Kevin Harvick Childress Chevrolet 46.454 + 0.587
26. Brad Keselowski Penske Ford 46.495 + 0.628
27. David Gilliland Front Row Ford 46.538 + 0.671
28. Michael Waltrip Swan Toyota 46.544 + 0.677
29. Josh Wise Front Row Ford 46.549 + 0.682
30. Michael McDowell Parsons Ford 46.631 + 0.764
31. Scott Speed Leavine Ford 46.644 + 0.777
32. Juan Pablo Montoya Earnhardt Ganassi Chevrolet 46.668 + 0.801
33. David Ragan Front Row Ford 46.718 + 0.851
34. Bobby Labonte JTG Daugherty Toyota 46.737 + 0.870
35. Terry Labonte FAS Lane Ford 46.903 + 1.036
36. Dave Blaney Baldwin Chevrolet 46.993 + 1.126
37. JJ Yeley Baldwin Chevrolet 47.070 + 1.203
38. Joe Nemechek NEMCO-JRR Toyota 47.407 + 1.339
39. David Reutimann BK Toyota 47.515 + 1.442
40. Travis Kvapil BK Toyota 47.637 + 1.507
41. Mike Bliss Humphrey Smith Chevrolet 47.854 + 1.695