World Champion Lewis Hamilton continued to set the pace during the second practice session for the Italian Grand Prix at Monza.
Hamilton moved to the front with a time of 1:24.279 on the Option tyres to end the session 0.021s faster than Mercedes team-mate Nico Rosberg.
The pair had earlier traded quickest times on the Prime tyres before Hamilton edged narrowly clear on the Option compound.
Ferrari’s Sebastian Vettel was again third on the time sheets, 0.759s behind Hamilton, with the German only marginally faster on Option tyres than the Mercedes driver on Primes.
Force India carried over its strong form from the opening session as Sergio Pérez placed fourth and Nico Hülkenberg collected fifth.
Kimi Räikkönen was sixth fastest while Lotus claimed seventh and eighth, Romain Grosjean beating Pastor Maldonado despite a wild moment at Ascari.
Williams rounded out the top 10 as Valtteri Bottas finished three-tenths of a second up on Felipe Massa.
It meant that eight of the top 10 runners were powered by Mercedes, though the manufacturer’s customer teams have not received the updated unit brought for the main squad.
Sauber put its recent engine upgrades from Ferrari to use by placing 11th and 12th – Felipe Nasr and Marcus Ericsson – while Daniel Ricciardo was compromised by a suspected gearbox problem on his way to 13th.
Max Verstappen spun under braking for the Ascari chicane but was able to escape from the gravel trap and finished in 14th, ahead of Toro Rosso team-mate Carlos Sainz Jr.
Fernando Alonso finished the session in 16th position, ahead of Manor Marussia duo Will Stevens and Roberto Merhi.
Jenson Button was able to complete just three laps before a problem side-lined his McLaren MP4-30 while Daniil Kvyat rounded out the runners.