German driver Nico Rosberg set Friday the fastest time of the two free practice sessions in preparation for the Grand Prix of Bahrein.Rosberg, driving a Williams FW31-Toyota, set a quick time of 1:33.339 in the afternoon, edging the Renault of Fernando Alonso and the Toyota of Jarno Trulli . Friday, free practice 1: 1 - Lewis Hamilton (McLaren MP4/24-Mercedes) - 1'33"647 - 19 laps2 - Nick Heidfeld (BMW F1.09) - 1'33"907 - 173 - Robert Kubica (BMW F1.09) - 1'33"938 - 174 - Nico Rosberg (Williams FW31-Toyota) - 1'34"227 - 245 - Jenson Button (Brawn BGP001-Mercedes) - 1'34"434 - 156 - Heikki Kovalainen (McLaren MP4/24-Mercedes) - 1'34"502 - 247 - Rubens Barrichello (Brawn BGP001-Mercedes) - 1'34"531 - 188 - Felipe Massa (Ferrari F60) - 1'34"589 - 179 - Mark Webber (Red Bull RB5-Renault) - 1'34"827 - 2110 - Kimi Raikkonen (Ferrari F60) - 1'34"827 - 1911 - Kazuki Nakajima (Williams FW31-Toyota) - 1'34"880 - 2412 - Sebastian Vettel (Red Bull RB5-Renault) - 1'34"938 - 2113 - Nelson Piquet (Renault R29) - 1'34"974 - 2114 - Adrian Sutil (Force India VJM02-Mercedes) - 1'35"021 - 1815 - Jarno Trulli (Toyota TF109) - 1'35"036 - 2216 - Giancarlo Fisichella (Force India VJM02-Mercedes) - 1'35"042 - 1617 - Timo Glock (Toyota TF109) - 1'35"333 - 2018 - Fernando Alonso (Renault R29) - 1'35"348 - 2419 - Sebastien Bourdais (Toro Rosso STR4-Ferrari) - 1'35"353 - 2220 - Sebastien Buemi (Toro Rosso STR4-Ferrari) - 1'35"369 - 15 Friday, free practice 2: 1 - Nico Rosberg (Williams FW31-Toyota) - 1'33"339 - 36 laps2 - Fernando Alonso (Renault R29) - 1'33"530 - 253 - Jarno Trulli (Toyota TF109) - 1'33"616 - 374 - Sebastian Vettel (Red Bull RB5-Renault) - 1'33"661 - 295 - Mark Webber (Red Bull RB5-Renault) - 1'33"676 - 326 - Jenson Button (Brawn BGP001-Mercedes) - 1'33"694 - 357 - Adrian Sutil (Force India VJM02-Mercedes) - 1'33"763 - 308 - Timo Glock (Toyota TF109) - 1'33"764 - 379 - Rubens Barrichello (Brawn BGP001-Mercedes) - 1'33"885 - 3010 - Kazuki Nakajima (Williams FW31-Toyota) - 1'33"899 - 3611 - Lewis Hamilton (McLaren MP4/24-Mercedes) - 1'33"994 - 3012 - Giancarlo Fisichella (Force India VJM02-Mercedes) - 1'34"025 - 2313 - Sebastien Buemi (Toro Rosso STR4-Ferrari) - 1'34"127 - 3714 - Sebastien Bourdais (Toro Rosso STR4-Ferrari) - 1'34"366 - 2615 - Nelson Piquet (Renault R29) - 1'34"411 - 2916 - Felipe Massa (Ferrari F60) - 1'34"564 - 3417 - Robert Kubica (BMW F1.09) - 1'34"605 - 3118 - Kimi Raikkonen (Ferrari F60) - 1'34"670 - 2819 - Heikki Kovalainen (McLaren MP4/24-Mercedes) - 1'34"764 - 3520 - Nick Heidfeld (BMW F1.09) - 1'34"790 - 33Unofficial timing photo: Williams
F1: Nico Rosberg leads Bahrein practice sessions