New engine, no problem for Matthew Brabham. The runaway leader in this year’s Pro Mazda Championship Presented by Cooper Tires was forced to run a fresh SpeedSource Mazda rotary engine in his #83 MAZDASPEED/Team Andretti Autosport entry after his engine was collected for a routine verification yesterday evening. It made no difference as the 19-year-old from Boca Raton, Fla., once again won convincingly this morning in the second leg of the Allied Building Products Grand Prix of Toronto.