United States GP, Austin - Friday practice (combined times)

1. Sebastian VettelGermanyRed Bull-Renault1m 37.718s
2. Mark WebberAustraliaRed Bull-Renault1m 38.475s
3. Fernando AlonsoSpainFerrari-Ferrari1m 38.483s
4. Lewis HamiltonBritainMcLaren-Mercedes1m 38.748s
5. Jenson ButtonBritainMcLaren-Mercedes1m 38.786s
6. Felipe MassaBrazilFerrari-Ferrari1m 39.029s
7. Nico RosbergGermanyMercedes-Mercedes1m 39.448s
8. Bruno SennaBrazilWilliams-Renault1m 39.531s
9. Kamui KobayashiJapanSauber-Ferrari1m 39.653s
10. Michael SchumacherGermanyMercedes-Mercedes1m 40.115s
11. Kimi RaikkonenFinlandLotus-Renault1m 40.166s
12. Pastor MaldonadoVenezuelaWilliams-Renault1m 40.230s
13. Romain GrosjeanFranceLotus-Renault1m 40.286s
14. Sergio PerezMexicoSauber-Ferrari1m 40.326s
15. Daniel RicciardoAustraliaToro Rosso-Ferrari1m 40.435s
16. Jean-Eric VergneFranceToro Rosso-Ferrari1m 40.516s
17. Nico HulkenbergGermanyForce India-Mercedes1m 40.700s
18. Paul di RestaBritainForce India-Mercedes1m 41.430s
19. Heikki KovalainenFinlandCaterham-Renault1m 42.476s
20. Timo GlockGermanyMarussia -Cosworth1m 42.652s
21. Vitaly PetrovRussiaCaterham-Renault1m 42.846s
18. Charles PicFranceMarussia -Cosworth1m 43.288s*
23. Pedro de la RosaSpainHRT-Cosworth1m 44.453s
24. Narain KarthikeyanIndiaHRT-Cosworth1m 45.114s
25 Ma Qing HuaChinaHRT-Cosworth1m 48.559s*

all times unofficial

* denotes driver setting time in first of two 90-minute sessions