Nine-time MotoGP champion Valentino Rossi will race in Sunday's Aragon GP just 22 days after breaking his leg in two places.
Rossi, whose only MotoGP win this season came in the Dutch TT in June, broke the tibia and fibula in his right leg while riding an off-road bike near his home town of Urbino on 31 August.
The 38-year-old completed two laps at the Marco Simoncelli Circuit in Rimini on Monday before the session was curtailed because of rain, 20 laps on Tuesday in Misano, then passed a medical examination on Wednesday.
However, the Italian still needs to pass a medical at the circuit and will not confirm his participation until after the first session of free practice.
Should Rossi not come through Friday's practice session, WorldSBK star van der Mark will remain on standby for his MotoGP debut.
"Fortunately, yesterday I had a good test with my YZF-R1M in Misano," Rossi said.
"I tried also the day before, but the rain stopped me after a few laps. Yesterday I managed to complete 20 laps and find the answers I was looking for.
"Eventually, the test was positive and I want to say thanks to Dr. Lucidi and his staff, who helped me find the best solutions to feel the least amount of pain possible in my leg when I'm riding.
"Obviously at the end of the test I was in a little bit of pain, but this morning I went to Dr. Pascarella for a medical check, and it came out with a positive result. At the end I decided I will leave for Aragón and will try to ride my M1 this weekend.
"If I will be declared fit to ride, I'll have the real answer after FP1, because riding the M1 will be a much bigger challenge. We'll see. See you in Aragon!"
You can watch every MotoGP race live on BT Sport on the eir Sport platform. The 14th MotoGP takes place on Sunday, 24 September at MotorLand Aragon in Spain at 1pm, and will be shown live on BT Sport 2.
Image: Getty Images/ Shaun Botterill
eir Sport channels are available across the eir Vision, Sky and Vodafone TV platforms as well as on the eir Sport app. All 7 channels in the eir Sport pack are available for free if you are a residential eir broadband customer