Kyle Busch was fastest in the final Xfinity Series practice at Atlanta Motor Speedway for the Rinnai 250.
Busch posted a speed of 179.528 mph.
All three practice sessions were topped by different drivers and manufacturers.
Busch topped Kevin Harvick (179.261), Aric Almirola (179.035), Denny Hamlin (178.971) and Daniel Hemric (178.971).
Harvick had the best 10-lap average at 176.153 followed by Busch and Kyle Larson.