Iannone’s Ducati on top in Assen practice
Practice Results
| Pos. | Rider | Num | Nation | Team | Constructor | Time/Gap |
| 1 | IANNONE Andrea | 29 | ITA | Ducati Team | Ducati | 1'33.591 |
| 2 | ROSSI Valentino | 46 | ITA | Movistar Yamaha MotoGP | Yamaha | 1'33.595 |
| 3 | MARQUEZ Marc | 93 | SPA | Repsol Honda Team | Honda | 1'33.724 |
| 4 | VINALES Maverick | 25 | SPA | Team Suzuki Ecstar | Suzuki | 1'33.892 |
| 5 | LORENZO Jorge | 99 | SPA | Movistar Yamaha MotoGP | Yamaha | 1'33.991 |
| 6 | DOVIZIOSO Andrea | 4 | ITA | Ducati Team | Ducati | 1'34.011 |
| 7 | PETRUCCI Danilo | 9 | ITA | Octo Pramac Racing | Ducati | 1'34.065 |
| 8 | ESPARGARO Aleix | 41 | SPA | Team Suzuki Ecstar | Suzuki | 1'34.087 |
| 9 | ESPARGARO Pol | 44 | SPA | Monster Yamaha Tech 3 | Yamaha | 1'34.163 |
| 10 | REDDING Scott | 45 | GBR | Octo Pramac Racing | Ducati | 1'34.172 |
| 11 | PEDROSA Dani | 26 | SPA | Repsol Honda Team | Honda | 1'34.206 |
| 12 | BARBERA Hector | 8 | SPA | Avintia Racing | Ducati | 1'34.404 |
| 13 | CRUTCHLOW Cal | 35 | GBR | LCR Honda | Honda | 1'34.480 |
| 14 | SMITH Bradley | 38 | GBR | Monster Yamaha Tech 3 | Yamaha | 1'34.531 |
| 15 | LAVERTY Eugene | 50 | IRE | Aspar MotoGP Team | Ducati | 1'34.789 |
| 16 | MILLER Jack | 43 | AUS | Estrella Galicia 0,0 Marc VDS | Honda | 1'35.008 |
| 17 | BRADL Stefan | 6 | GER | Aprilia Racing Team Gresini | Aprilia | 1'35.056 |
| 18 | HERNANDEZ Yonny | 68 | COL | Aspar MotoGP Team | Ducati | 1'35.125 |
| 19 | PIRRO Michele | 51 | ITA | Ducati Team | Ducati | 1'35.220 |
| 20 | BAUTISTA Alvaro | 19 | SPA | Aprilia Racing Team Gresini | Aprilia | 1'35.284 |
| 21 | RABAT Tito | 53 | SPA | Estrella Galicia 0,0 Marc VDS | Honda | 1'36.582 |