Fiat Yamaha's Jorge Lorenzo kept his lead at the top of the MotoGP timesheets at Brno this morning but the Repsol Honda of Dani Pedrosa got ahead of Lorenzo's team-mate Valentino Rossi in the second free practice session.
Lorenzo is just over a tenth in front of his countryman with Rossi around half a second off the pace and Monster Yamaha's Colin Edwards in fourth, a further quarter of a second behind The Doctor.
Lorenzo was fastest out of the box, setting a 1'56.458 with 20 minutes of the session gone. Rossi came out and secured second on the same run of laps with a 1'56.809, and Rizla Suzuki's Loris Capirossi in third.
Pedrosa demoted Capriossi with 37 minutes left in the session, lapping at 1'57.537 and then, ten minutes later, knocked Rossi out of second place with his first lap under 1'57s, a 1'56.462 which was only 0.004s off Lorenzo.
However, with 15 minutes left, Lorenzo was back out on track and shaved another tenth off his time which was good enough to secure top spot. Capirossi ended up in fifth with Gresini Honda's Toni Elias rounding out a theoretical second row.
Pedrosa's team-mate Andrea Dovizioso heads row three, some 1'677s off the pace, with Ducati stand-in rider Mika Kallio eighth and Elias' team-mate Alex De Angelis in ninth. Nicky Hayden is tenth, nearly two seconds in arrears.
Britain's James Toseland, on the second Monster Yamaha, ended in 12th just behind the Hayate of Marco Melandri and the former World Superbike Champion just leap-frogged Nico Canepa with his penultimate lap.