SEPANG (AFP) - Spain's Dani Pedrosa set a commanding pace on Friday as Honda swept the top five positions in the opening practice at the Malaysian Grand Prix at Sepang. With Yamaha's Jorge Lorenzo sidelined by a hand injury he sustained in Australia last week, it was no surprise to see five Honda riders topping the timesheets. Pedrosa set the fastest time in both 45-minute sessions, with his quickest time coming in the second session (2:01.250). The Spaniard was 0.8sec quicker than Casey Stoner, the newly crowned world champion and strong favourite. Stoner, 26, has won at hot and humid Sepang in every category he has ridden in. "Hopefully the weather stays off a bit," said the Australian. "Its nice to come back to a circuit weve been this successful at and hopefully we can have a good weekend." Stoner clocked a time of 2:02.070, with Italy's Andrea Dovizioso third. Marco Simoncelli was fourth and team-mate Hiroshi Aoyama fifth. Stoner is chasing his own 2007 record of 10 victories in one year and Mick Doohan's 1997 mark of 12 poles.