Kurt Busch posted the fastest single lap in the final practice for the Toyota/SaveMart 350 at Sonoma Raceway with a speed of 94.061 mph.
He beat second-place Denny Hamlin (94.012 mph) by .040 seconds.
Martin Truex Jr. (93.718) had the third fastest lap, but the team will have some work to do before Saturday’s qualification. With nine minutes remaining on the clock, he ran into the back of Bubba Wallace in the esses and did significant damage to his nose. Wallace landed 34th on the chart with a speed of 91.641 mph.
Harvick (91.468) had the quickest 10-lap average – leading a sweep of the top three by Stewart Haas Racing. Busch was second quickest at 91.452 mph with Clint Bowyer third quick at 91.443 mph.
William Byron broke an axle seal in final practice, but the team was able to get him back on track with 24 minutes remaining in the session. His speed of 92.279 mph was 25th fastest.