Spielberg bei Knittelfeld (Austria): Mercedes' Lewis Hamilton and Nico Rosberg showed they were undaunted by a new track Friday, dominating the first practice sessions ahead of Sunday's returning Austrian Grand Prix.

Hamilton (left) and Rosberg

Hamilton set the fastest lap of the day at one minute and 9.542 seconds, finishing 0.377 seconds ahead of teammate and current championship leader Rosberg in the second practice session.