Red Bull’s Sebastian Vettel edged Ferrari’s Fernando Alonso in an intensely competitive final practice at the Canadian Grand Prix.
The world champion was just 0.006 seconds quicker than Alonso, who sat out the final minutes of the session after posting his time earlier.
McLaren’s Lewis Hamilton was third quickest, 0.270secs behind Vettel, with Red Bull’s Mark Webber fourth.
One second covered the first 16 cars, with McLaren’s Jenson Button in 15th.
Williams driver Pastor Maldonado was fifth fastest, ahead of Ferrari’s Felipe Massa.
Mercedes driver Michael Schumacher was seventh, followed by Lotus drivers Romain Grosjean and Kimi Raikkonen, and the Force India drivers Nico Hulkenberg and Di Resta.
1. Sebastian Vettel Red Bull-Renault 1m14.442 2. Fernando Alonso Ferrari 1m14.448s + 0.006 3. Lewis Hamilton McLaren-Mercedes 1m14.712s + 0.270 4. Mark Webber Red Bull-Renault 1m14.724s + 0.282 5. Pastor Maldonado Williams-Renault 1m14.755s + 0.313 6. Felipe Massa Ferrari 1m14.767s + 0.325 7. Michael Schumacher Mercedes 1m14.796s + 0.354 8. Romain Grosjean Lotus-Renault 1m14.873s + 0.431 9. Kimi Raikkonen Lotus-Renault 1m14.977s + 0.535 10. Nico Hulkenberg Force India-Mercedes 1m14.992s + 0.550 11. Paul di Resta Force India-Mercedes 1m15.067s + 0.625 12. Sergio Perez Sauber-Ferrari 1m15.112s + 0.670 13. Kamui Kobayashi Sauber-Ferrari 1m15.126s + 0.684 14. Bruno Senna Williams-Renault 1m15.237s + 0.795 15. Jenson Button McLaren-Mercedes 1m15.327s + 0.885 16. Daniel Ricciardo Toro Rosso-Ferrari 1m15.498s + 1.056 17. Vitaly Petrov Caterham-Renault 1m16.268s + 1.826 18. Heikki Kovalainen Caterham-Renault 1m16.545s + 2.103 19. Pedro de la Rosa HRT-Cosworth 1m17.705s + 3.263 20. Timo Glock Marussia-Cosworth 1m17.974s + 3.532 21. Narain Karthikeyan HRT-Cosworth 1m18.189s + 3.747 22. Charles Pic Marussia-Cosworth 1m18.684s + 4.242 23. Jean-Eric Vergne Toro Rosso-Ferrari no time 24. Nico Rosberg Mercedes no time