Lewis Hamilton top in Brazilian Grand Prix second practice
Lewis Hamilton topped both Friday practice sessions at the start of a Brazilian Grand Prix weekend that is critical to his title hopes.
Hamilton was 0.03 seconds quicker than Rosberg over one flying lap and also had a clear advantage on longer runs.
The Mercedes duo's closest rivals at Interlagos were the Williams pair of Valtteri Bottas and Felipe Massa.
If Mercedes team-mate Nico Rosberg wins on Sunday, the German will become champion for the first time.
Raikkonen and Toro Rosso's Carlos Sainz have been called to see the stewards after an on-track incident during the session.
They were seen driving slowly alongside each other, perhaps because one felt the other had blocked him, before Raikkonen accelerated around the outside of Sainz and then cutting across him to enter the pits at the end of the lap.