Patience helped Chris Green earn his second victory of the Ultra 94 Porsche GT3 Cup Challenge Canada by Michelin season after a rough-and-tumble Saturday race during the Grand Prix of Trois-Rivières (GP3R).

Green, from Montreal, beat rival Scott Hargrove to the finish by 4.996 seconds in his No. 9 Pfaff Motorsports Porsche.

“I’m really proud of the Pfaff Motorsports Castrol guys today, especially here today in front of my Castrol family, my friends and family here at home,” Green said. “I’m pretty pumped.”

Carlos de Quesada, from Odessa, Florida, finished third in the No. 22 Alegra Motorsports entry for his first Platinum Cup overall podium finish since 2012 and his first Platinum Masters victory of the season.

Mark Motors Racing teammates Marco Cirone and Perry Bortolotti finished second and third, respectively, in Platinum Masters.

Tim Sanderson regained the Gold Cup (2010-2013 car models) championship lead with his second victory of the season in the No. 07 Alegra Motorsports/Northwest Atlantic Motorsports Porsche.

Daniel was forced to drop out of the race with mechanical problems in the No. 75 TRC Porsche.

Sanderson, from Pickering, Ontario, never was threatened after Daniel’s misfortune and cruised to a victory. Shaun McKaigue, from Gilford, Ontario, finished second in the No. 34 Fiorano Racing entry. Martin Harvey, from Berthierville, Quebec, was third in the No. 08 Wingho Racing Inc. 911 GT3 Cup car.

Keith Bass ended the perfect streak of Alegra Motorsports teammate Chuck Harris with his first Silver Cup (2005½-2009 car models) victory of the season in the No. 49 Alegra Motorsports Porsche.

Bass, from Tampa, Florida, took the Silver Cup lead after Harris hit the wall in Turn 1 early in the race and damaged the cooling system on his No. 50 Alegra Motorsports entry.

Harris, from Tampa, Florida, pursued Bass but was forced to pull off into a runoff area due to overheating and eventually retired from the race. Harris had won in Silver Cup for the first six rounds of the season.

On Sunday’s race, Spencer Pigot won Round 8 of the Ultra 94 Porsche GT3 Cup Challenge Canada by Michelin on Sunday during the Grand Prix of Trois-Rivières (GP3R).

Pigot, from Orlando, Florida, beat championship leader Scott Hargrove to the finish by 8.499 seconds in the No. 21 Alegra Motorsports Porsche for his second victory of the season. The smooth, composed drive despite close battles with Hargrove and fellow title contender Chris Green earlier in the race was a successful contrast from Round 7 on Saturday, in which Pigot was penalized for bumping Hargrove into a spin early in the race.

“It was a great race,” Pigot said. “We’ve been working hard all weekend, so I have to thank the Alegra guys for continuing to improve the car. Today was really good.”

Round 7 winner Green, from Montreal, finished third on Sunday in the No. 9 Pfaff Motorsports Porsche 911 GT3 Cup car. He ended up 0.778 of a second behind Hargrove after stalking Hargrove’s No. 69 OpenRoad Porsche for the second half of the 45-minute race.

Hargrove, from Surrey, BC, extended his Platinum Cup (2014 car models) championship lead to 16 points, 152-136, over Green with just two rounds remaining on Aug. 30-31 at Canadian Tire Motorsport Park in Bowmanville, Ontario. Forty points will be on the line at the finale, as the winning driver in each round earns 20 points.

Carlos de Quesada, from Odessa, Florida, earned his second Platinum Masters (age 45 and older) victory of the season – both this weekend – after a perhaps the best battle on the track for the entire 45-minute race.

He had one eye out his windshield while chasing Platinum Cup driver Borgeat and another on his rear-view mirror, keeping tabs of Platinum Masters rivals Cirone and Bortolotti.

All four drivers were within two seconds of each other – often closer – throughout the final 30 minutes. The only change in position came when Cirone, from Toronto, snuck past Mark Motors Racing teammate Bortolotti, from Kanata, Ontario, for second in Platinum Masters with 13 minutes remaining.

The 2013 Gold Cup champion de Quesada cut reigning Platinum Masters champion Cirone’s lead in the championship to eight points, 148-140, with two rounds remaining.

Quebec resident Jerimy Daniel overcame a disappointing result Saturday to deliver himself the best 21st birthday present possible – a Gold Cup victory in the No. 75 TRC Porsche.

Daniel, from Candiac, Quebec, didn’t finish Round 7 Saturday due to a punctured radiator in his car. But he led nearly the whole way Sunday for his fifth Gold Cup victory of the season.

Series rookie Daniel pulled to within two points of Gold Cup championship leader Tim Sanderson, 140-138, with just two rounds remaining in the tightest points race in the series.

“It was a crazy race,” Daniel said. “t was really hot in the car, and I just tried to manage my race to stay in front and not do any mistakes like Tim did. He spun, so I just tried to stay in front and manage my race so I can keep my first place and give me this birthday present.”

Sanderson, from Pickering, Ontario, finished second Sunday in the No. 07 Alegra Motorsports / Northwest Atlantic Motorsports after winning Round 7 on Saturday. He spun early in the race while hustling to chase Daniel and ended up 21.303 seconds behind Daniel.

Shaun McKaigue, from Gilford, Ontario, finished third in Gold Cup in the No. 34 Fiorano Racing Porsche. It was his second Gold Cup podium of the weekend, as he finished second Saturday in Round 7.

Just 24 points separate Sanderson from fifth-place Ilker Starck in the tight championship chase in Gold Cup.

Chuck Harris returned to his winning ways in Silver Cup (2005½-2009 car models) with his seventh victory in eight rounds in the No. 50 Alegra Motorsports Porsche.

Harris, from Tampa, Florida, was eliminated from Round 7 on Saturday after hitting the wall. But the skill of the Alegra Motorsports team helped Harris return to the top step of the podium.

Keith Bass, from Tampa, Florida, finished second in the No. 49 Alegra Motorsports Porsche after earning his first victory of the season in Round 7 on Saturday.

Harris leads the Silver Cup championship standings by 12 points with two rounds remaining.

Rounds 9 and 10 of the 2014 Ultra 94 Porsche GT3 Cup Challenge Canada by Michelin - both 45-minute races – are scheduled for Aug. 30-31 at Canadian Tire Motorsport Park at Bowmanville, Ontario. They are the final two races of the season.

For more information on the Ultra 94 Porsche GT3 Cup Challenge Canada by Michelin, visit www.imsa.com and @IMSA on Twitter with the hashtag #GT3CAN. Live commentary for both races will be provided on Twitter at @IMSALive.