Andrea Dovizioso jadi pembalap tercepat di sesi latihan bebas pertama MotoGP Aragon. Tiga penunggang mesin Ducati lainnya mengisi posisi 2-4.
Dalam sesi latihan bebas pertama di lintasan Aragon, Jumat (21/9/2018) petang WIB, Ducati menempatkan empat pembalap di empat posisi terdepan. Dovizioso jadi yang tercepat dengan catatan satu menit 48,020 detik.
Duo Pramac Ducati yaitu Danilo Petrucci dan Jack Miller berturut-turut mengisi tiga besar. Petrucci mencatatkan waktu satu menit 48,210 detik, disusul Miller dengan satu menit 48,734 detik.
Teman setim Dovizioso di tim pabrikan Ducati, Jorge Lorenzo, berada di posisi empat. Di belakangnya ialah pembalap Movistar Yamaha Maverick Vinales dan pembalap Repsol Honda Marc Marquez.
Valentino Rossi, Johann Zarco, Cal Crutchlow, dan Andrea Iannone melengkapi 10 besar.
1. Andrea Dovizioso ITA Ducati Team (GP18) 1m 48.020s [Lap 15/19] 337km/h (Top Speed)
2. Danilo Petrucci ITA Pramac Ducati (GP18) 1m 48.210s +0.190s [17/18] 338k
3. Jack Miller AUS Pramac Ducati (GP17) 1m 48.734s +0.714s [16/19] 329k
4. Jorge Lorenzo ESP Ducati Team (GP18) 1m 48.751s +0.731s [16/17] 336k
5. Maverick Viñales ESP Movistar Yamaha (YZR-M1) 1m 48.803s +0.783s [13/17] 334k
6. Marc Marquez ESP Repsol Honda (RC213V) 1m 48.804s +0.784s [4/19] 336k
7. Valentino Rossi ITA Movistar Yamaha (YZR-M1) 1m 48.958s +0.938s [18/19] 333k
8. Johann Zarco FRA Monster Yamaha Tech3 (YZR-M1) 1m 49.003s +0.983s [16/16] 333k
9. Cal Crutchlow GBR LCR Honda (RC213V) 1m 49.128s +1.108s [7/17] 341k
10. Andrea Iannone ITA Suzuki Ecstar (GSX-RR) 1m 49.241s +1.221s [4/20] 334k
11. Alex Rins ESP Suzuki Ecstar (GSX-RR) 1m 49.439s +1.419s [4/20] 333k
12. Pol Espargaro ESP Red Bull KTM Factory (RC16) 1m 49.526s +1.506s [17/17] 335k
13. Aleix Espargaro ESP Factory Aprilia Gresini (RS-GP) 1m 49.637s +1.617s [16/18] 334k
14. Alvaro Bautista ESP Angel Nieto Team (GP17) 1m 49.639s +1.619s [7/19] 337k
15. Karel Abraham CZE Angel Nieto Team (GP16) 1m 49.648s +1.628s [11/17] 335k
16. Scott Redding GBR Factory Aprilia Gresini (RS-GP) 1m 49.780s +1.760s [15/16] 329k
17. Bradley Smith GBR Red Bull KTM Factory (RC16) 1m 49.900s +1.880s [4/16] 331k
18. Dani Pedrosa ESP Repsol Honda (RC213V) 1m 49.944s +1.924s [7/19] 339k
19. Takaaki Nakagami JPN LCR Honda (RC213V)* 1m 50.070s +2.050s [17/18] 327k
20. Thomas Luthi SWI EG 0,0 Marc VDS (RC213V)* 1m 50.219s +2.199s [17/18] 328k
21. Xavier Simeon ESP Reale Avintia (GP17)* 1m 50.314s +2.294s [14/15] 326k
22. Franco Morbidelli ITA EG 0,0 Marc VDS (RC213V)* 1m 50.377s +2.357s [7/17] 332k
23. Hafizh Syahrin MAL Monster Yamaha Tech3 (YZR-M1)* 1m 50.694s +2.674s [14/14] 330k
24. Jordi Torres SPA Reale Avintia (GP16) 1m 52.823s +4.803s [15/18] 333k