Justin Allgaier celebrates in victory lane after winning a NASCAR Xfinity Series race Sunday at Iowa Speedway in Newton, Iowa.

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Xfinity Series

Newton, Iowa: Justin Allgaier won all three stages and the NASCAR Xfinity Series race Sunday at Iowa Speedway for his second victory of the season.

Racing for Dale Earnhardt Jr. in JR Motorsports’ No. 7 Chevrolet Camaro, Allgaier led 182 of 250 laps and survived an unlucky late caution by winning the restart.

Allgaier also won last month at Dover. He has seven career victories — but few of those runs were as dominant as the one Allgaier pulled off in the searing heat on Iowa’s short track.

“We had a great car,” Allgaier said. “Incredible … how could you not enjoy this?”

Despite Allgaier’s dominance, Christopher Bell made him work to keep the lead throughout the final stage — at times closing to within a tenth of a second of taking the lead — before finishing second.

Daniel Hemric was third, followed by Cole Custer and Brandon Jones, and Riley Herbst was sixth in his series debut.

Points leader Elliott Sadler lost a tire at the end of stage one. He finished 28th and saw his lead dwindle to just four points.

24 Hour Le Mans

Le Mans, France: Two-time Formula One champion Fernando Alonso won the 24 Hours Le Mans on his debut in the classic endurance race to move closer to motorsport’s unofficial Triple Crown.

The Spanish driver, together with teammates Kazuki Nakajima of Japan and Sebastien Buemi of Switzerland, completed 388 laps in their Toyota hybrid car.

They finished two more than Mike Conway, Kamui Kobayashi and Jose Maria Lopez in the other Toyota hybrid.

Alonso is bidding to match British driver Graham Hill’s feat of completing the Triple Crown, including wins at the Monaco Grand Prix and Indianapolis 500. Alonso is a two-time winner in Monaco.

“Le Mans once a year is not enough! It needs to be every three weeks,” joked Alonso, who looked to be in trouble when Buemi was penalized for speeding in a caution zone late Saturday.

Alonso’s car was left more than two minutes behind the other Toyota but the Spaniard managed to claw back the difference through the night, putting Nakajima in position to retake the lead from Kobayashi early on Sunday.

“I felt great tonight,” Alonso said after his final stint driving. “I don’t know exactly how, but I managed to make the tires work for us at the right time despite the cool air temp.”

It was Toyota’s first victory at the 20th attempt, and the first win for a Japanese manufacturer since Mazda’s success in 1991.

Former Formula One champion Jenson Button raced for the private SMP team, but the Briton’s non-hybrid car faced early problems with engine trouble that forced its retirement in the final hour.

NHRA

Bristol, Tenn.: Tony Schumacher raced to his first Top Fuel victory of the season in the Fitzgerald USA NHRA Thunder Valley Nationals.

Schumacher had a 3.946-second run at 313.58 mph to edge Mike Salinas in the final round, the 150th final of Schumacher’s career. He has six career victories at Bristol and 84 overall.

Ron Capps won the Funny Car event for the second straight year, and Jeg Coughlin Jr. topped the Pro Stock field.

Capps won for the first time this season and 59th overall, edging Bob Tasca III with a 4.234 at 296.37 in a Chevrolet Camaro SS. Capps also gave Don Schumacher Racing its 300th nitro victory.

Coughlin beat Greg Anderson with a 6.709 at 205.10 for his second victory of the season and 60th overall.

“It’s a testament to our team,” Coughlin said. “We showed our way right to the checkers in Chicago and then came back … It felt fantastic behind the wheel.”