Ryan Hunter-Reay snatched the top spot from Justin Wilson in the closing moments of Friday's second IndyCar practice session in Toronto.
Dreyer & Reinbold driver Wilson had led most of the hour, holding a half-second advantage for much of the session. But his rivals began closing in on the Briton's 1m02.1839sec lap late on, with Andretti Autosport's Hunter-Reay finally sneaking ahead by 0.0406sec.
Penske's Helio Castroneves and Will Power were third and fourth, ahead of a strong fifth place from Raphael Matos (De Ferran Dragon). Alex Tagliani was again a frontrunner in his home country, the Fazzt driver holding a top three spot for much of the afternoon and eventually taking sixth.
A late improvement earned E.J. Viso seventh for KV, with Ganassi's Scott Dixon and Dario Franchitti next up and Penske's Ryan Briscoe completing the top 10. Local hero Paul Tracy completed only eight laps and spent much of the session in the KV Racing pit.
Despite countless visits to the run-off areas and some minor brushes with the wall by various drivers, there was only one significant accident – when Newman/Haas' Hideki Mutoh lost control on acceleration out of Turn 1 and spun into the Turn 2 wall, mangling his car's rear end.
Pos Driver Team Time Gap
1. Ryan Hunter-Reay Andretti 1m02.1433s
2. Justin Wilson Dreyer & Reinbold 1m02.1839s + 0.0406s
3. Helio Castroneves Penske 1m02.2550s + 0.1117s
4. Will Power Penske 1m02.3439s + 0.2006s
5. Raphael Matos De Ferran Dragon 1m02.3894s + 0.2461s
6. Alex Tagliani FAZZT 1m02.3915s + 0.2482s
7. E.J. Viso KV 1m02.4783s + 0.3350s
8. Scott Dixon Ganassi 1m02.5004s + 0.3571s
9. Dario Franchitti Ganassi 1m02.5112s + 0.3679s
10. Ryan Briscoe Penske 1m02.8013s + 0.6580s
11. Danica Patrick Andretti 1m02.8957s + 0.7524s
12. Tony Kanaan Andretti 1m02.9234s + 0.7801s
13. Tomas Scheckter Dreyer & Reinbold 1m03.0924s + 0.9491s
14. Bertrand Baguette Conquest 1m03.1961s + 1.0528s
15. Graham Rahal Newman/Haas 1m03.2973s + 1.1540s
16. Vitor Meira Foyt 1m03.3250s + 1.1817s
17. Hideki Mutoh Newman/Haas 1m03.3807s + 1.2374s
18. Marco Andretti Andretti 1m03.4523s + 1.3090s
19. Mario Moraes KV 1m03.6882s + 1.5449s
20. Dan Wheldon Panther 1m03.7328s + 1.5895s
21. Takuma Sato KV 1m03.8464s + 1.7031s
22. Alex Lloyd Dale Coyne 1m04.2268s + 2.0835s
23. Simona de Silvestro HVM 1m04.4667s + 2.3234s
24. Mario Romancini Conquest 1m04.6253s + 2.4820s
25. Paul Tracy KV 1m04.6549s + 2.5116s
26. Milka Duno Dale Coyne 1m10.6528s + 8.5095s