Toyota's Timo Glock pipped Fernando Alonso to top spot in the second practice session ahead of the Japanese Grand Prix.
The 26-year-old clocked a fine time of one minute 18.383 seconds at the Fuji Speedway, edging out the Spaniard by 0.043s.
Lewis Hamilton, who was quickest in the first session, ended up third with a time of 1:18.463s ahead of title rival Felipe Massa who finished fourth.
Ferrari team-mate Kimi Raikkonen was fifth ahead of Red Bull's Mark Webber, who managed a time of 1:18.734s to round off the top six.
Williams driver Kazuki Nakajima claimed seventh in his home race, with Sebastian Vettel finishing eighth, in front of Heikki Kovalainen and Jarno Trulli, who complete the top ten.
British pair David Coulthard and Jenson Button both had disappointing runs, with the Red Bull man ending up 17th, while his Honda rival propped up the pack.
With the conditions dry, Force India's Giancarlo Fisichella recorded the first timed lap three minutes in with a 1:24.053s.
Alonso then took over four seconds off the best time with a 1:19.951s, which his former McLaren team-mate then went and beat by 0.315s.
The lead then swapped between Massa, Adrian Sutil, Trulli and Vettel before Glock went to the top of the timesheets.
Alonso showed some pace with a 1:18.426s to go second as Hamilton and Massa trained in vain on the final lap to gain top-spot, but had to settle for third and fourth.
1 L Hamilton, McLaren, 1m 18.910
2 F Massa, Ferrari, 1m 19.063
3 H Kovalainen, McLaren 1m 19.279
4 K Raikkonen, Ferrari, 1m 19.399
5 F Alonso, Renault, 1m 19.473
6 N Piquet, Renault, 1m 19.743
7 S Vettel, Toro Rosso, 1m 20.121
8 R Kubica, BMW Sauber, 1m 20.160
9 S Bourdais, Toro Rosso, 1m 20.182
10 Kazuki Nakajima, Williams, 1m 20.217
11 A Sutil, Force India, 1m 20.288
12 N Rosberg, Williams, 1m 20.350
13 M Webber, Red Bull, 1m 20.620
14 N Heidfeld, BMW Sauber, 1m 20.628
15 J Trulli, Toyota, 1m 20.657
16 R Barrichello, Honda, 1m 20.753
17 J Button, Honda, 1m 20.769
18 T Glock, Toyota, 1m 20.823
19 D Coulthard, Red Bull, 1m 20.905
20 G Fisichella, Force India, 1m 21.014
1 Glock, Toyota, 1m 18.383
2 Alonso, Renault, 1m 18.426
3 Hamilton, McLaren, 1m 18.463
4 Massa, Ferrari, 1m 18.491
5 Raikkonen, Ferrari, 1m 18.725
6 Webber, Red Bull, 1m 18.734
7 Nakajima, Williams, 1m 18.734
8 Vettel, Toro Rosso, 1m 18.761
9 Kovalainen, McLaren, 1m 18.803
10 Trulli, Toyota, 1m 18.863
11 Kubica, BMW, 1m 18.865
12 Piquet, Renault, 1m 18.888
13 Rosberg, Williams, 1m 18.981
14 Bourdais, Toro Rosso, 1m 19.040
15 Barrichello, Honda, 1m 19.258
16 Sutil, Force India, 1m 19.287
17 Coulthard, Red Bull, 1m 19.327
18 Fisichella, Force India, 1m 19.482
19 Heidfeld, BMW, 1m 19.894
20 Button, Honda, 1m 19.999

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