LOUDON, N.H. — Denny Hamlin held off Kyle Larson over the final laps Sunday at New Hampshire Motor Speedway to send Joe Gibbs Racing to victory lane for the first time this season. One of the top organizations in NASCAR, JGR had yet to have any of its four drivers win until Hamlin took the lead with 33 laps left and held off the hard-charging Larson on the final lap. Hamlin needed his 30th career Cup victory to secure a berth in NASCAR’s version of the postseason and end a winless streak that stretched to last September at Richmond.