NASCAR's Steve O'Donnell took exception to air gun issues being a main topic of conversation after the Pennzoil 400 at Las Vegas Motor Speedway.The series' executive vice president and chief racing development officer was asked about the spec-issued guns on SiriusXM NASCAR Radio Monday morning after problems with the equipment...

At least three teams experienced problems with the NASCAR-mandated pit guns during Sunday's race at Atlanta Motor Speedway.Kevin Harvick dominated and won the 325-lap race, but under the competition caution at Lap 30 he had to make two pit stops to ensure the lug nuts were tight. The No.4 team...