Busch won the pole for the Overton's 400 at Pocono Raceway Sunday. The turns are only one or two grooves-wide, however the straightaways between them.
After the final sequence of pit stops, Busch emerged with 11-lap fresher tires allowing him to quickly catch Hamlin and Harvick, who held a multi-second lead over the Joe Gibbs Racing.
Busch started on the pole and led a race-high 74 of a possible 160 laps in winning at Pocono for the first time in 26 career starts.
The race featured a monster wreck early in the race involving eight drivers.
Matt Kenseth spin in front of the field causing various drivers, including Danica Patrick and Austin Dillon, to sustain damage.
The win, while his first of events that count towards the Cup, is not his first of the year. He's now won at 22 of 23 tracks on the schedule, with the exception being Charlotte Motor Speedway. His eight stage wins this year are second only to Truex Jr., who now finds himself in first place.
The next race hails from Watkins Glen International on Sunday, Aug. 6, where the I LOVE NEW YORK 355 at The Glen will take place.