Scott Dixon became the first back-to-back winner of the IndyCar season after taking victory in the opening race of this weekend's double-header at Toronto.
The Target Chip Ganassi Racing driver stayed out a lap longer than then-leader Will Power to take the advantage during the final round of stops, but was passed by Dragon Racing's Sebastien Bourdais on a restart with 16 laps remaining.
There was some dispute over whether Bourdais moved early, although it was reviewed and declared clean by race control. Although Bourdais was ahead, the combination of fading red tires and the fact that he was out of push-to-pass left him vulnerable to Dixon, and the New Zealander picked him off a short time later.
With a clear track, Dixon opened a gap of 3.3 seconds, only to lose it when Alex Tagliani spun while trying to pass Simon Pagenaud and brought out the yellows again. The restart came with a lap to go, this time with the field organised in single-file, and Dixon nailed it to secure the win.
Bourdais held on to finish second in a dramatic turnaround for Dragon Racing after the team's poor start to the season, while early race leader Dario Franchitti survived a late lunge from Power to cross the line in third.
But even as the Scot was celebrating on the podium, word came from race control that he had been issued a time penalty for blocking Power on the final lap, dropping him to 13th and promoting Marco Andretti to third.
"Will chose a line, he couldn't stop, he bounced off of me ... I just don't know," said Franchitti.
After the race, IndyCar officials met with Franchitti and Target Chip Ganassi Racing team members to further review the blocking penalty. The team presented car data showing steering trace and braking points from the incident, while the group also viewed additional video. Upon further review, IndyCar reinstated Franchitti to his original third-place finishing position.
The encounter with Franchitti didn't work out well for Power either, who had lunged into a miniscule gap between the Scot and the wall, bounced off the Ganassi car, and went nose-first into the Turn 3 barrier. In a blink, he plummeted from fourth to 15th.
Typically for Toronto there were a number of incidents but few drivers had more things go wrong than reigning champion Ryan Hunter-Reay, who stalled in both of his stops, and then hit the wall while battling Andretti teammate EJ Viso. As a result, Helio Castroneves again stretched his points lead with a fifth-place finish.
The race was scheduled to feature the first-ever standing start in an IndyCar-sanctioned race, but that was abandoned when Josef Newgarden stalled on the grid. Under the regulations, the race was switched to a rolling start.
Results - 85 laps:
Pos Driver Team/Car Time/Gap
1. Scott Dixon Ganassi/Honda 1h41m17.0605s
2. Sebastien Bourdais Dragon/Chevy +1.7007s
3. Dario Franchitti Ganassi/Honda +27.9116s
4. Marco Andretti Andretti/Chevy +3.7273s
5. Tony Kanaan KV/Chevy +4.5961s
6. Helio Castroneves Penske/Chevy +5.0720s
7. Mike Conway Coyne/Honda +5.5749s
8. James Hinchcliffe Andretti/Chevy +8.6580s
9. Simon Pagenaud Schmidt/Honda +10.2140s
10. Simona de Silvestro KV/Chevy +10.8797s
11. Justin Wilson Coyne/Honda +11.3536s
12. James Jakes Rahal/Honda +11.6899s
13. Ed Carpenter Carpenter/Chevy +13.0557s
14. EJ Viso Andretti/Chevy +47.5037s
15. Will Power Penske/Chevy +1 lap
16. Sebastian Saavedra Dragon/Chevy +1 lap
17. Alex Tagliani Herta/Honda +1 lap
18. Ryan Hunter-Reay Andretti/Chevy +2 laps
19. Tristan Vautier Schmidt/Honda +2 laps
20. Graham Rahal Rahal/Honda +3 laps
21. Charlie Kimball Ganassi/Honda +13 laps
22. Ryan Briscoe Panther/Chevy +21 laps
Josef Newgarden Fisher/Honda 34 laps
Takuma Sato Foyt/Honda 32 laps