AUSTIN, Texas - Championship leader Lewis Hamilton maintained his place at the top during the second free practice session for the 2014 United States Grand Prix when he outpaced his Mercedes team mate Nico Rosberg by just 0.003 of a second.
Hamilton had also been fastest in the first session and his afternoon supremacy meant that he had now been fastest in 14 of the 17 second free practice sessions in 2014.
The two Mercedes men, separated by just 17 points in the title race, were more than a second clear of third-placed Ferrari's Fernando Alonso.
VETTEL TO START FROM PITS LANE
Daniel Ricciardo, winner of three races for Red Bull in 2014, was fourth ahead of Felipe Massa of Williams and Kimi Rakkonen in the second Ferrari.
Russian Daniil Kvyat was seventh for Toro Rosso ahead of Kevin Magnussen and his McLaren team mate Jenson Button and 10th placed Nico Hulkenberg in a Force India.
Sebastian Vettel, who is leaving Red Bull at the end of the season, was only able to complete a few installation laps at the end of the session following a gearbox change.
Vettel will have to start the race from the pits lane after changing the power unit on his Red Bull.
2014 US grand prix at the Circuit of the Americas:
Second practice
1 Lewis Hamilton (GBR) Mercedes 1min39.085
2 Nico Rosberg (GER) Mercedes 1min39.088
3 Fernando Alonso (ESP) Ferrari 1min40.189
4 Daniel Ricciardo (AUS) Red Bull 1min40.390
5 Felipe Massa (BRA) Williams 1min40.457
6 Kimi Raikkonen (FIN) Ferrari 1min40.543
7 Daniil Kvyat (RUS) Toro Rosso 1min40.631
8 Kevin Magnussen (DEN) McLaren 1min40.641
9 Jenson Button (GBR) McLaren 1min40.698
10 Nico Hulkenberg (GER) Force India 1min40.800
11 Valtteri Bottas (FIN) Williams 1min40.828
12 Romain Grosjean (FRA) Lotus 1min41.054
13 Jean-Eric Vergne (FRA) Toro Rosso 1min41.110
14 Sergio Perez (MEX) Force India 1min41.123
15 Pastor Maldonado (VEN) Lotus 1min41.158
16 Adrian Sutil (GER) Sauber 1min41.332
17 Esteban Gutierrez (MEX) Sauber 1min41.420
18 Sebastian Vettel (GER) Red Bull 1min43.980
First practice
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