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.