Nolasport won the opening Pirelli GT4 America SprintX/East race of the weekend at Canadian Tire Motorsport Park on Friday afternoon.
Matt Travis and Jason Hart combined from third on the grid to claim their third overall win of the season in the No. 47 Porsche 718 Cayman GT4 Clubsport.
It also continued their sweep of the GT4 America SprintX Pro-Am class, with the pair having claimed maximum points in that category at all five races so far this year.
Travis ran in third and fourth position during his opening stint, while the lead battle unfolded ahead between Alan Brynjolfsson and polesitter Matt Fassnacht.
The two leaders swapped positions during a tense duel which ended in Fassnacht pushing Brynjolfsson’s Park Place Motorsports Porsche into a spin.
This ended Brynjolfsson and Hindman’s race, while Murillo Racing’s Fassnacht was given a one-minute stop-and-hold penalty for causing the contact, effectively dropping him and Christian Szymczak out of contention.
Both leaders dropping out allowed Jarett Andretti to assume the lead in his Andretti Autosport McLaren 570S GT4, but his co-driver Karl Thomson lost two positions shortly after the driver change.
James Clay and Hart then assumed the top two positions, with Hart able to get past the Epic Motorsports BMW M4 GT4 with 19 minutes on the clock and remain out front for the rest of the race.
Clay was later overtaken by Gregory Liefooghe, who just missed out on runner-up position at the line when Elivan Goulart made a late-race charge.
Goulart secured second position with his Krugspeed Ginetta G55 GT4, finishing eight seconds behind the leader, while Liefooghe completed the podium.
Goulart and co-driver Anthony Geraci took the East Pro-Am class win while Clay and Randy Mueller, from fourth overall, came out on top in the East Am category.
The Andretti McLaren was the best-placed SprintX Am car, finishing sixth on track.
The second and final GT4 America SprintX/East race of the weekend will take place at 4 p.m. on Saturday.