Boises Brian Scott was the 12th-fastest driver Sunday at 194.776 mph, and his time of 46.207 seconds was about three-tenths of a second off polesitter Austin Dillons pace. The No. 33 Chevrolet was the slowest of the four Richard Childress Racing entries behind Dillon, Ryan Newman (fifth) and Paul Menard (10th), but good enough to all but lock up a spot in the field.
Scott will start sixth of 24 cars in the second Budweiser Duel on Thursday (races start at 5 and 6:30 p.m., Fox Sports 1).
The top 15 finishers in each Duel other than the front-row starters for the 500, Dillon and Martin Truex, Jr., will fill positions 3-32 on Sunday's grid; the cars in the second Duel will fill the even-numbered spots.
Positions 33-36 in the 500 revert to the top four qualifying times among the remaining drivers, giving Scott an insurance policy if he has a rough Duel. The next six spots will go to the remaining cars with the most owner's points from last season points the car or entry earned in 2013, regardless of the driver. The final position goes to the most recent former Cup champion who isn't already locked into the field.