Rookie Quartararo continues his stellar form by leading Free Practice 1 for the German MotoGP.
The Petronas Yamaha rider knocked Marquez from the top spot, with new soft front and medium rear tyres, in the final minutes.
Marquez, who has the new Honda frame with carbon-fibre bracing available this weekend and used the same medium rear tyre throughout FP1, is seeking his tenth successive pole and race victory at the Sachsenring.
Team-mate Jorge Lorenzo is absent after fractures to his vertebrae last weekend at Assen and is being replaced by HRC test and wild-card rider Bradl.
LCR riders Nakagami and Crutchlow are both carrying leg injuries, the Japanese from Assen and the Englishman from a bicycle accident.
| German MotoGP - Free Practice (1) Results | ||||||
| Pos | Rider | Nat | Team | Time/Diff | Lap | Max |
| 1 | Fabio Quartararo | FRA | Petronas Yamaha (YZR-M1)* | 1'21.390s | 21/22 | 289k |
| 2 | Marc Marquez | SPA | Repsol Honda (RC213V) | +0.074s | 7/24 | 294k |
| 3 | Valentino Rossi | ITA | Monster Yamaha (YZR-M1) | +0.574s | 21/24 | 289k |
| 4 | Alex Rins | SPA | Suzuki Ecstar (GSX-RR) | +0.577s | 5/25 | 291k |
| 5 | Maverick Viñales | SPA | Monster Yamaha (YZR-M1) | +0.861s | 12/24 | 291k |
| 6 | Andrea Dovizioso | ITA | Mission Winnow Ducati (GP19) | +0.892s | 7/18 | 294k |
| 7 | Jack Miller | AUS | Pramac Ducati (GP19) | +0.975s | 6/23 | 295k |
| 8 | Andrea Iannone | ITA | Factory Aprilia Gresini (RS-GP) | +1.007s | 14/22 | 289k |
| 9 | Takaaki Nakagami | JPN | LCR Honda (RC213V) | +1.025s | 16/20 | 288k |
| 10 | Cal Crutchlow | GBR | LCR Honda (RC213V) | +1.049s | 6/20 | 293k |
| 11 | Pol Espargaro | SPA | Red Bull KTM Factory (RC16) | +1.068s | 7/20 | 292k |
| 12 | Karel Abraham | CZE | Reale Avintia Ducati (GP18) | +1.097s | 22/22 | 288k |
| 13 | Franco Morbidelli | ITA | Petronas Yamaha (YZR-M1) | +1.122s | 21/27 | 288k |
| 14 | Aleix Espargaro | SPA | Factory Aprilia Gresini (RS-GP) | +1.153s | 5/20 | 293k |
| 15 | Danilo Petrucci | ITA | Mission Winnow Ducati (GP19) | +1.176s | 9/22 | 290k |
| 16 | Johann Zarco | FRA | Red Bull KTM Factory (RC16) | +1.315s | 8/23 | 290k |
| 17 | Stefan Bradl | GER | Repsol Honda (RC213V) | +1.339s | 5/24 | 293k |
| 18 | Francesco Bagnaia | ITA | Pramac Ducati (GP18)* | +1.339s | 8/16 | 292k |
| 19 | Miguel Oliveira | POR | Red Bull KTM Tech3 (RC16)* | +1.372s | 7/24 | 289k |
| 20 | Joan Mir | SPA | Suzuki Ecstar (GSX-RR)* | +1.466s | 12/25 | 292k |
| 21 | Tito Rabat | SPA | Reale Avintia Ducati (GP18) | +1.508s | 8/29 | 291k |
| 22 | Hafizh Syahrin | MAL | Red Bull KTM Tech3 (RC16) | +2.567s | 4/22 | 287k |
* Rookie.
Official Sachsenring MotoGP records:
Best lap:
Marc Marquez SPA Honda1m 20.270s (2018)
Fastest race lap:
Jonas Folger GER Yamaha1m 21.442s (2017)
