Lewis Hamilton topped the timesheets in the opening practice session for the 2010 Malaysian Grand Prix, with Nico Rosberg denying McLaren a one-two after a last-gasp lap.
Jenson Button and Michael Schumacher were third and fourth respectively making it a Mercedes-powered lockout of the top of the standings.
Although the rain stayed away, the session did not run without incident with the likes of Felipe Massa and Pedro de la Rosa making trips across the gravel traps.
Sebastian Vettel could only manage ninth for Red Bull, as he complained about having issues with slowing his car down.
Pos Driver Team Time Laps 1. Hamilton McLaren 1:34.921 19 2. Rosberg Mercedes 1:35.106 + 0.185 19 3. Button McLaren 1:35.207 + 0.286 25 4. Schumacher Mercedes 1:35.225 + 0.304 14 5. Kubica Renault 1:35.402 + 0.481 22 6. Webber Red Bull 1:35.479 + 0.558 22 7. Sutil Force India 1:35.955 + 1.034 20 8. Alonso Ferrari 1:35.959 + 1.038 20 9. Vettel Red Bull 1:35.043 + 1.122 19 10. Buemi Toro Rosso 1:36.100 + 1.179 20 11. Massa Ferrar 1:36.451 + 1.530 22 12. Kobayashi Sauber 1:36.503 + 1.582 28 13. Alguersuari Toro Rosso 1:36.645 + 1.724 18 14. Petrov Renault 1:36.712 + 1.791 9 15. di Resta Force India 1:36.891 + 1.970 25 16. de la Rosa Sauber 1:36.899 + 1.978 24 17. Hulkenberg Williams 1:37.802 + 2.881 27 18. Barrichello Williams 1:38.278 + 3.357 18 19. Trulli Lotus 1:39.460 + 4.539 21 20. Glock Virgin 1:39.755 + 4.834 17 21. di Grassi Virgin 1:40.159 + 5.238 25 22. Fauzy Lotus 1:40.721 + 5.800 19 23. Senna HRT 1:41.832 + 6.911 27 24. Chandhok HRT 1:41.966 + 7.045 24
