Updated

Klaus Graf and Lucas Luhr won the American Le Mans Series race at Canadian Tire Motorsport Park on Sunday, and Marino Franchitti and Scott Tucker topped the P2 prototype class.

Luhr extended his ALMS victory record to 45 with the P1 win in the No. 6 Muscle Milk HPD ARX-03c prototype in the 2-hour, 45-minute race on the 2.459-mile, 10-turn circuit. It was the fifth consecutive win at the track for Luhr and Graf, who led every lap Sunday en route to their fourth victory of the season.

Franchitti, the younger brother of three-time Indianapolis 500 champion Dario Franchitti, teamed with Tucker in the No. 551 Siemens/Alpina Watches/Ohiya Casino Resort HPD ARX-03b to edge Scott Sharp and Guy Cosmo in the No. 01 Tequila Patron HPD ARX-03b, giving Level 5 Motorsports its fourth victory of the season.

"The days when you win with a car that isn't maybe the fastest are the most satisfying," Franchitti said. "I've always said this is my favorite track and I've never been able to win here before today."

In the GT class, reigning series champions Tommy Milner and Oliver Gavin won in the No. 4 Compuware Chevrolet Corvette, edging the No. 91 SRT Viper of Dominik Farnbacher and Marc Goossens by 0.267 seconds. It was Milner's 40th ALMS class victory, third on the career list behind Luhr and Olivier Beretta (42).

"I had to do whatever I could do to hold him off without getting a penalty," Milner said about his closing duel with Farnbacher. "Our car wasn't quite as good as theirs. I told myself going into Turn 8 on that last lap that I was either going to spin myself out or it was going to stick and I was going to keep the lead. I threw it in there and I here I am."