Fernando Alonso topped the timing screens at the end of the first free practice session of the United States Grand Prix weekend, at Circuit of the Americas in Austin, Texas.

Fernando_Alonso-FerrariDense fog caused a half hour delay to the start of proceedings, and when they finally got underway the running was brief before the red flag waved to stop the action, because the medical helicopter was not at the venue for some odd reason the result was that what should have been a typical 90 session was truncated to around half an hour.

Alonso, who was nursing a back injury, set the session best in the opening laps, but it quickly became apparent that the likes of Red Bull, Mercedes and Lotus were not trying to go for hot laps in the limited remaining time.

01.Spain Fernando AlonsoScuderia Ferrari1:38.34316
02.United Kingdom Jenson ButtonVodafone McLaren Mercedes1:38.37125
03.Finland Valtteri BottasWilliams F11:38.38817
04.Mexico Esteban GutiƩrrezSauber F11:38.53218
05.Deutschland Nico Rosberg Mercedes AMG Petronas1:38.65721
06.United Kingdom Lewis Hamilton Mercedes AMG Petronas1:38.97921
07.Brazil Felipe MassaScuderia Ferrari1:39.00517
08.Australia Mark WebberRed Bull Racing1:39.08317
09.Deutschland Nico HulkenbergSauber F11:39.15817
10.Venezuela Pastor MaldonadoWilliams F11:39.20015
11.France Romain GrosjeanLotus F11:39.23813
12.Mexico Sergio PerezVodafone McLaren Mercedes1:39.25617
13.Finland Heikki KovalainenLotus F11:39.48718
14.Deutschland Adrian SutilSahara Force India1:39.69915
15.United Kingdom Paul di RestaSahara Force India1:39.83615
16.Australia Daniel RicciardoScuderia Toro Rosso1:39.86319
17.Russia Daniil KvyatScuderia Toro Rosso1:40.06520
18.Deutschland Sebastian VettelRed Bull Racing1:40.66221
19.U.S.A. Alexander RossiCaterham F1 Team1:41.39921
20.United Kingdom Max ChiltonMarussia F11:41.60519
21.France Charles PicCaterham F1 Team1:42.05419
22.Venezuela Rodolfo GonzalesMarussia F11:43.71617