The fifth and final day of 2021 Official MotoGP pre-season testing is underway at Losail in Qatar.

After the March 5 Shakedown (led by Stefan Bradl) and then opening Official Test from March 6-7 (which saw new Monster Yamaha signing Fabio Quartararo fastest), Jack Miller beat the official lap record en route to putting Ducati on top at the start of the second test.

Maverick Vinales fought back for Yamaha on day two, but Miller's 1m 53.183s remains the best of the test heading into Friday's final day, when LCR Honda's Alex Marquez will need to brave the pain of a small fracture in his foot.

Testing takes place from 2pm to 9pm each day, followed by ten minutes reser🐟ved for practice starts, but windy and dusty conditions mean only Pol Espargaro and Danilo Petrucci have so far set a lap time, with some riders packing up early.