MotoGP's highly anticipated upcoming Pirelli tyre test at Brno will feature some unexpected riders, in spite of the massive reshuffle of the grid in 2027.

The test, which will be closed off to media and public, will mark the first time that currently-contracted riders are able to sample the rubber Pirelli is working on for '27 - when it replaces Michelin as MotoGP's tyre supplier - and the 850cc prototypes manufacturers have put together for the upcoming ruleset.

But not every manufacturer has multiple fit riders under contract that it knows it will be continuing with into '27, so the rider roster for the test has presented a particular conundrum for some, even if it's been straightforward for us.

Ducati

Marc Marquez - Fermin Aldeguer

Ducati will test with the two riders that it is believed to have extended into 2027 and 2028.

Marc Marquez is due to continue in the factory Ducati team, while Fermin Aldeguer will switch from Gresini to VR46 while retaining full factory status.

Aldeguer all but confirmed his participation in the test, and said: "At the end, it's an advantage for the riders that have a contract."

Aprilia

Marco Bezzecchi - TBC

Current MotoGP championship leader Marco Bezzecchi was handed a new Aprilia deal in the off-season and is a no-brainer to run in the test.

But there's some intrigue surrounding the second name. Tester Lorenzo Savadori will be on standby but it's been reported by Motorsport.com that Raul Fernandez - absent from the Czech Grand Prix media day on Thursday due to illness - should run alongside Bezzecchi.

Other Aprilia full-timers Jorge Martin and Ai Ogura are definitely leaving in '27, both for Yamaha, but Fernandez is under consideration to retain his seat at satellite team Trackhouse, and it would be taken as a really good sign for his prospects if he did test on Monday.

KTM

Pedro Acosta - TBC

Several Spanish media outlets have now reported that Pedro Acosta will test KTM's 850cc prototype at Brno, despite it being widely known that he will be a Ducati rider next year.

Acosta will have received and accepted the offer to test as KTM's clear benchmark rider. His team-mate Brad Binder has not yet confirmed or denied his status for Monday, but both Tech3 riders (Enea Bastianini and Maverick Vinales) confirmed when queried by The Race that they will not be testing the 850cc bike at Brno.

The expectation is that Acosta will be joined by one of KTM's testers, presumably Pol Espargaro.

Honda

Joan Mir - Luca Marini

Neither Joan Mir, nor Luca Marini is set to be part of Honda's race line-up next year. The former is known to be off to Gresini Ducati, while the latter's future is still murky.

But both Mir and Marini will test Honda's 850cc prototype.

"I mean, I think it's a clever thing," said Mir when asked by The Race whether the call-up surprised him. 

"You are trying to develop a bike, you have two riders that developed the bike in the last four years, and the progression was there, so I don't see the reason why not. 

"And we will give good feedback to Pirelli in this case, that is also important, to try to make some evolution on it, and help them to arrive as prepared as possible for next season. So for me, it makes sense, and it's clever."

Mir suggested it was a win-win for Honda and himself despite their separate futures.

Johann Zarco will have certainly run in the test, having a Honda contract that runs through 2027, but remains out with a knee injury and no determined timeline for return.

Team-mate Diogo Moreira is also contracted beyond the end of this year, and insisted this weekend again that he would like to test on Monday - though it's not clear whether that's possible given Honda's Mir-Marini decisions.

Yamaha

Toprak Razgatlioglu - Augusto Fernandez

Both Fabio Quartararo and Jack Miller offered to test the 850cc bike for Yamaha, and Alex Rins said he had been asking about it, too.

But none of the three will feature. "On Monday I will be with my family, having a barbecue," Quartararo smiled.

"I mean, of course I understand that Yamaha don't want me to test the bike. I mean, this I see as pretty normal. If they ask me to test, of course I will test."

The under-contract Toprak Razgatlioglu, who is staying at Pramac next year, will thus be joined in the test by test rider Augusto Fernandez.