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Pembalap Ducati Andrea Dovizioso, menduduki puncak FP3 MotoGP Catalunya, karena mengalami kecelakaan Marc Marquez harus mengikuti Q1.
Marquez berada pada posisi 10 ketika ia jatuh di tikungan ke 10 di menit – menit akhir FP3 Motogp Catalunya 2018. Dan ketika Dovizioso melakukan lap terakhir untuk mengakhiri sesi, Marquez dipaksa keluar dari Q2. Marquez sekarang harus berjuang melalui Q1 untuk pertama kalinya sejak seri Mugello di musim 2015.
| Pos | # | Rider | Bike | Laps | Time | Gap |
|---|---|---|---|---|---|---|
| 1 | 4 | Andrea Dovizioso | Ducati | 19 | 1’38.923 | |
| 2 | 25 | Maverick Viñales | Yamaha | 21 | 1’39.012 | 0.089 |
| 3 | 35 | Cal Crutchlow | Honda | 15 | 1’39.041 | 0.118 |
| 4 | 5 | Johann Zarco | Yamaha | 19 | 1’39.143 | 0.220 |
| 5 | 46 | Valentino Rossi | Yamaha | 19 | 1’39.150 | 0.227 |
| 6 | 9 | Danilo Petrucci | Ducati | 19 | 1’39.202 | 0.279 |
| 7 | 26 | Dani Pedrosa | Honda | 22 | 1’39.219 | 0.296 |
| 8 | 53 | Tito Rabat | Ducati | 23 | 1’39.256 | 0.333 |
| 9 | 93 | Marc Marquez | Honda | 18 | 1’39.390 | 0.467 |
| 10 | 55 | Hafizh Syahrin | Yamaha | 18 | 1’39.528 | 0.605 |
| 11 | 29 | Andrea Iannone | Suzuki | 20 | 1’39.597 | 0.674 |
| 12 | 99 | Jorge Lorenzo | Ducati | 18 | 1’39.677 | 0.754 |
| 13 | 41 | Aleix Espargaro | Aprilia | 17 | 1’39.712 | 0.789 |
| 14 | 19 | Alvaro Bautista | Ducati | 19 | 1’39.720 | 0.797 |
| 15 | 43 | Jack Miller | Ducati | 19 | 1’39.816 | 0.893 |
| 16 | 30 | Takaaki Nakagami | Honda | 22 | 1’39.819 | 0.896 |
| 17 | 21 | Franco Morbidelli | Honda | 17 | 1’39.872 | 0.949 |
| 18 | 44 | Pol Espargaro | KTM | 18 | 1’39.973 | 1.050 |
| 19 | 36 | Mika Kallio | KTM | 18 | 1’40.034 | 1.111 |
| 20 | 42 | Alex Rins | Suzuki | 21 | 1’40.040 | 1.117 |
| 21 | 38 | Bradley Smith | KTM | 19 | 1’40.047 | 1.124 |
| 22 | 10 | Xavier Simeon | Ducati | 18 | 1’40.291 | 1.368 |
| 23 | 45 | Scott Redding | Aprilia | 19 | 1’40.389 | 1.466 |
| 24 | 50 | Sylvain Guintoli | Suzuki | 18 | 1’40.615 | 1.692 |
| 25 | 12 | Thomas Luthi | Honda | 19 | 1’40.638 | 1.715 |
| 26 | 17 | Karel Abraham | Ducati | 16 | 1’40.739 | 1.816 |