It’s the 15th career victory across 11 Cup tracks for Byron, who opened the season with his second consecutive Daytona 500 win. The Hendrick Motorsports star became the fifth driver with multiple victories this season, joining Denny Hamlin (four), Kyle Larson (three), Christopher Bell (three) and Shane van Gisbergen (three).

William Byron nursed his car to the finish line at Iowa Speedway as the whole team held its breath there was enough fuel to take the checkered flag.