A podium finish in Toronto was not enough for Australia's Will Power to earn his spot back atop the IndyCar championship standings.
Power slipped 13 points behind Penske teammate and series leader Helio Castroneves after finishing ninth and third in the round's two races on Sunday.
Frenchman Sebastien Bourdais, who started from pole position, took race one honours, ahead of Brazil's Castroneves in second and countryman Tony Kanaan.
The triumph broke a 52-race losing streak for ex-Formula One driver Bourdais - a four-time IndyCar champion - dating back to 2007.
Britain's Mike Conway later claimed his second victory of the season by holding off Kanaan in a three-lap sprint to the finish in the day's rain-affected second feature.
Power rounded out the podium, while Castroneves finished 12th with a damaged wing.
The rain caused a frightening moment when drivers began to slide on the temporary street course, with Juan Pablo Montoya slipping off and into a tyre barrier.
He was hit from behind moments later by rookie Mikhail Aleshin, who slid under Montoya's car upon contact.
"It was not nice at all because I was sitting under the car," the Russian driver said.
"It was getting so hot from (Montoya's) car, I couldn't breathe at all because the car is very hot."
The opening race, which had been postponed from Saturday due to bad weather, had its own harrowing moment when a six-car crash led to a red flag on the first lap.
After a long delay, racing resumed with Bourdais leading the field for all but six of the 65 laps.
"I've got a big smile across my face and I can't seem to get rid of it," Bourdais said after the victory.
"The whole race I was stressed out, it felt too easy, it felt like it was way too much under control, and it felt like it was going to go wrong at some point."
The series next heads to Lexington, Ohio for the Indy 200 on August 3.
Share
