LOUDON, N.H. -- Brad Keselowski completed a flawless weekend at New Hampshire Motor Speedway and won Sunday's NASCAR Sprint Cup race under a green-white checkered finish.
Keselowski followed up Saturday's Nationwide Series victory with his first Sprint Cup win at the 1.058-mile track. He dominated in the No. 2 Ford for his third victory of the season, and the 2012 Sprint Cup champion is now tied with Jimmie Johnson for the series lead in wins.
"This was just such a phenomenal weekend, and these don't happen that often," Keselowski said.
After the last caution came with four laps left, Keselowski pulled away on the final restart. He led 138 of 305 laps (four more than the scheduled 301).
"You can't have a great car if you don't have the best driver," team owner Roger Penske said.
Pole-sitter Kyle Busch was second, followed by Kyle Larson, Matt Kenseth and Ryan Newman. Busch said the No. 18 Toyota never had enough to mount a serious challenge.
"I don't think anybody did," Busch said.
Joey Logano was running inside the top five late in the race when he connected with Morgan Shepherd. The 72-year-old Shepherd, who extended his mark as the oldest driver to start a Cup race, was 15 laps down when his No. 33 slid up into Logano.
"I feel like there should be a driver's test before you get out in a Cup car and make sure you know how to drive before you drive one," said Logano, who ended up 40th.
Shepherd was 39th and completed 278 laps. He was never warned about not meeting the minimum speed of 115.875 mph.
"It's an accident," NASCAR vice president of competition Robin Pemberton said. "It could happen with any competitor."
Johnson was knocked out of the race early after two rear left tire issues. The first time the tire was flat; the second time, the tire exploded and slammed the No. 48 Chevrolet into the fence. He finished 42nd.
Goodyear said the tires weren't the problem.
"The tires failed in a manner consistent of low inflation pressure," Greg Stucker, Goodyear's director of racing, said.