Lee Mowle resisted intense pressure from Jamie Constable to win the second Masters Racing Legends support race to IMSA’s Chevrolet Grand Prix at the Canadian Tire Motorsport Park. The two Britons were nose-to-tail for the final six laps, but Mowle’s Lotus 78 hung on for victory against Constable’s Tyrrell 011B.

Racing on the circuit formerly known as Mosport Park, the site of the Canadian GP between 1967 and 1977, Mowle hit the front on lap 4, taking the lead from reverse pole-sitter Gray Gregory’s March 761, while Saturday’s winner Constable came from the back on the reverse grid to take second from Bud Moeller after 15 minutes of the race, shortly before the American was forced to retire when his Williams FW08’s Cosworth engine began losing oil pressure.

James Hagan was second in the opening stages but when his Hesketh 308 started to lose pace, the Irishman fell into the clutches of Dean Baker whose Shadow DN8 moved up into third on the penultimate lap to win the pre-78 class. Behind Hagan, Gregory took fifth from Danny Baker in the Ralt RT1 Formula Atlantic car. Ron Maydon was an early retirement after his Lec CRP1 developed a tyre vibration.