Rossi currently leads the championship by one point from team-mate Jorge Lorenzo, who qualified in eighth.
Assen is the only surviving event from the inaugural 1949 grand prix season, but this year's race will be the last to be held on a Saturday.
Championship leaders Valentino Rossi and Jorge Lorenzo have a new Yamaha chassis this weekend, while Honda's Marc Marquez has reverted to the 2014 Honda chassis.
Karel Abraham is absent due to a foot injury at Catalunya...
Qualifying 2:1. Valentino Rossi ITA Movistar Yamaha MotoGP (YZR-M1) 1m 32.627s [Lap 8/9] 313km/h (Top Speed)2. Aleix Espargaro ESP Team Suzuki Ecstar (GSX-RR) 1m 32.858s +0.231s [6/8] 301km/h3. Marc Marquez ESP Repsol Honda Team (RC213V) 1m 32.886s +0.259s [8/8] 315km/h4. Dani Pedrosa ESP Repsol Honda Team (RC213V) 1m 32.987s +0.360s [8/9] 314km/h5. Pol Espargaro ESP Monster Yamaha Tech 3 (YZR-M1) 1m 33.013s +0.386s [7/8] 311km/h6. Andrea Iannone ITA Ducati Team (Desmosedici GP15) 1m 33.016s +0.389s [7/8] 316km/h7. Cal Crutchlow GBR CWM LCR Honda (RC213V) 1m 33.028s +0.401s [7/8] 312km/h8. Jorge Lorenzo ESP Movistar Yamaha MotoGP (YZR-M1) 1m 33.042s +0.415s [7/8] 308km/h9. Maverick Viñales ESP Team Suzuki Ecstar (GSX-RR)* 1m 33.076s +0.449s [6/7] 304km/h10. Andrea Dovizioso ITA Ducati Team (Desmosedici GP15) 1m 33.112s +0.485s [5/7] 318km/h11. Danilo Petrucci ITA Octo Pramac Racing (Desmosedici GP14.1) 1m 33.126s +0.499s [5/7] 309km/h12. Bradley Smith GBR Monster Yamaha Tech 3 (YZR-M1) 1m 33.236s +0.609s [6/8] 312km/h
Qualifying 1:13. Stefan Bradl GER Athina Forward Racing (Forward Yamaha) 1m 33.789s 305km/h14. Yonny Hernandez COL Octo Pramac Racing (Desmosedici GP14.2) 1m 33.875s 305km/h15. Loris Baz FRA Athina Forward Racing (Forward Yamaha)* 1m 33.999s 301km/h16. Scott Redding GBR Estrella Galicia 0,0 Marc VDS (RC213V) 1m 34.071s 303km/h17. Hector Ba rbera ESP Avintia Racing (Desmosedici GP14 Open) 1m 34.223s 313km/h18. Mike Di Meglio FRA Avintia Racing (Desmosedici GP14 Open) 1m 34.289s 306km/h19. Eugene Laverty IRL Aspar MotoGP Team (RC213V-RS)* 1m 34.428s 302km/h20. Jack Miller AUS CWM LCR Honda (RC213V-RS)* 1m 34.645s 303km/h21. Alvaro Bautista ESP Factory Aprilia Gresini (RS-GP) 1m 34.736s 303km/h22. Nicky Hayden USA Aspar MotoGP Team (RC213V-RS) 1m 34.972s 301km/h23. Alex De Angelis RSM E-Motion IodaRacing (ART) 1m 35.189s 293km/h24. Marco Melandri ITA Factory Aprilia Gresini (RS-GP) 1m 36.376s 303km/h
Blue Name = Factory - Official MotoGP ECU hardware, unique manufacturer software.20 litres of race fuel, 5 engine changes for the season. All engines identical throughout the year within the same team (development freeze).Black Name = Factory (with concessions) - Official MotoGP ECU hardware, unique manufacturer software.Applicable to Factory entries by a manufacturer that did not achieve a dry win in 2013 (Ducati) or any new MotoGP manufacturers (Suzuki and Aprilia).22 litres of race fuel for Ducati, 24 litres for Suzuki and Aprilia. Same 12 engine changes, softer rear tyre, no engine development freeze and extra testing opportunities as the Open Category. Fuel and soft tyre can change depending on top three results.Red Name = Open - Full official MotoGP ECU, hardware and software.24 litres of race fuel, 12 engine changes, softer rear tyre, no engine development freeze and greater testing opportunities relative to Factory.* Rookie
Fastest practice time:Valentino Rossi ITA Yamaha 1m 33.167s (FP3)Official Assen MotoGP records:Best lap:Dani Pedrosa SPA Honda 1m 34.548s (2012)Fastest race lap:Dani Pedrosa SPA Honda 1m 34.548s (2012)
