Lewis Hamilton has ended the third practice session in Austria on top, completing a sweep of the three sessions ahead of qualifying.
The six-time world champion clocked a lap time of 1:04.130 on his fastest hot lap, which was one-tenth and a half faster than teammate Valtteri Bottas, who concluded the session in second place.
On his final fast lap attempt, Bottas locked up at Turn 1 and was forced to abandon his effort, but remained in second with Max Verstappen behind.
Verstappen, who is being tipped to challenge Mercedes this weekend, was just under three-tenths of a second down on Hamilton, losing most of his time in the final sector of the lap.
One red flag was deployed during the session following a crash for rookie Nicholas Latifi. The Canadian spun at Turn 1 and hit the outside barrier, damaging his front wing.
Qualifying gets underway at 3 PM local time, with Mercedes looking the clear favourites after finishing first and second in every practice session so far this weekend.
Bahrain International Circuit - Winter testing