William Byron's first victory since the Daytona 500 provided a much-needed boost, putting him back atop the Cup Series standings.

Third-place finisher Brad Keselowski recaps his race at Iowa Speedway, explaining that the way cautions played out hurt his RFK Racing team's strategy.

William Byron describes the emotion of winning a hectic race at Iowa Speedway and what he did to save enough fuel at the end.

William Byron used a flurry of cautions to stretch his fuel over the final 140 laps to win Sunday's NASCAR Cup Series race at Iowa Speedway.

William Byron saves enough fuel to hold off late charges and completes the hat trick of winning at Iowa Speedway in all three national series.

More chaos strikes in the final stage as Chase Briscoe tags Tyler Reddick, sending him into Christopher Bell as the duo spins ...

Things keep getting wilder at Iowa Speedway as both Erik Jones and John Hunter Nemechek get involved in incidents during the ...

Cautions breed cautions as Carson Hocevar gets loose, sending Zane Smith into the SAFER barrier at Iowa Speedway.

See which Cup Series drivers are on the upswing, plus those who had a rough night in Sunday's race at Iowa Speedway.

Denny Hamlin spins early in final stage after contact with AJ Allmendinger during a four-wide battle after the restart at Iowa Speedway.

See the top highlights from Iowa Speedway, where countless cautions flew and a fuel-mileage gamble ended it. Related Videos ...

During a short sprint to end Stage 2, Brad Keselowski holds on while other cars find trouble during the restart at Iowa Speedway.