The Mercedes juggernaut rolls on, as has been the story in most of the circuits this season. Lewis Hamilton and Nico Rosberg are a class apart and barring a technical issue, they will be battling for victory at the Circuit of the Americas in Austin, Texas.
The battle for the final podium spot is going to be between Williams, Ferrari and Red Bull Racing.
Where to Watch Live
The third free practice begins at 3pm GMT on Saturday, while the qualifying session starts at 6pm BST. Sky Sports F1 and Sky Sports F1 HD will provide live coverage of both events in the UK.
Real-time Internet updates are available on the Live Timing section of the sport's official website.
It was the same story as in Russia two weeks back, with the Mercedes duo once again dominating both the sessions with Hamilton leading Rosberg in FP1 and FP2.
The Ferrari of Fernando Alonso was the closest to the Mercedes pair, with Red Bull's Daniel Ricciardo and Williams's Filipe Massa rounding off the top five.
Sebastian Vettel is going to have a difficult weekend as he is set to start the race from the pit lane owing to a new power unit in his car. The German driver struggled during practice as he bedded in his new unit.
Ferrari is set to resume its battle for the third place in the Constructors' Championship with Williams and more importantly, Rosberg will be keen to end Hamilton four race winning streak and make up some ground in the title race.
Top 10 Results of the Second Practice Session at the Circuit of the Americas, Austin, Texas.
1. LC Hamilton (GBR)Mercedes 1'39.085
2. N Rosberg (GER)Mercedes 1'39.088
3. F Alonso (ESP)Ferrari 1'40.189
4. D Ricciardo (AUS)Red Bull 1'40.390
5. F Massa (BRA)Williams 1'40.457
6. KM Räikkönen (FIN)Ferrari 1'40.543
7. D Kvyat (RUS)Toro Rosso 1'40.631
8. K Magnussen (DEN)McLaren 1'40.641
9. J Button (GBR)McLaren 1'40.698
10. N Hülkenberg (GER)Force India 1'40.800