Joan Mir shot back to the top of the timesheets in a tricky session which saw most riders elect to sit out of the first ten to fifteen minutes. After the lunch break in Aragon, the rain began spotting but stopped before FP2 got underway. Towards the end of the session the track began to dry and the fast laps came pouring in, but Championship leader Mir remained untouched at the top, from Aron Canet who was quickest this morning in FP1 and Enea Bastianini.

Ayumu Sasaki made a last ditch attempt to get into the top ten which most certainly paid off, as he shot from what felt like nowhere into fourth. Niccolo Antonelli continued his solid form from FP1 to finish the session in fifth, with Jorge Martin, Marco Bezzechi, Romano Fenati, Lorenzo Dalla Porta and John McPhee rounding out the top ten.

Top ten:

Joan Mir, Leopard Racing - 1:59.586

Aron Canet, Estrella Galicia 0,0 +0.156

Enea Bastianini, Estrella Galicia 0,0 +0.434

Ayumu Sasaki, SIC Racing Team +0.459

Niccolo Antonelli, Red Bull KTM Ajo +0.491

Jorge Martin, Del Conca Gresini Moto3 +0.495

Marco Bezzechi, CIP +0.546

Romano Fenati, Marinelli Rivacold Snipers +0.764

Lorenzo Dalla Porta, Aspar Mahindra Moto3 +0.848

John McPhee, British Talent Team +0.872

Marc Marquez topped the times in sketchy conditions, ahead of team mate Dani Pedrosa and Johann Zarco.

As the session began, drops of rain began to fall until it eventually started to pour. All riders remained in the pits for around fifteen minutes, until it was finally wet enough to come out on wets. Zarco led the way out of the pits and rounded out the top three at the end of the session.

Of course, all eyes fell to Valentino Rossi who is making his return to ride his factory Yamaha just 23 days after breaking his leg.

His first lap was around eight seconds off the pace, but he soon bounced back. For a while he sat in tenth place, but was demoted back to 18th, 2.8 seconds off the pace of Marquez.

Factory KTM test rider Mika Kallio is making his return too, riding alonside the KTM regulars Pol Espargaro and Bradley Smith.

With rumours circulating that this weekend will be the decider between Smith and Kallio, it is important for them both to perform at their best in order to take a permanent seat in the team next year.

Kallio's fastest lap of 2:02.099 saw him end the session in 5th, whereas Smith didn't set a time due to the bike breaking down on his out lap.

Top ten:

1. Marc Marquez, Repsol Honda Team - 2:01.243
2. Dani Pedrosa, Repsol Honda Team +0.498
3. Johann Zarco, Monster Yamaha Tech 3 +0.785
4. Jack Miller, EG 0,0 Marc VDS +0.856
5. Mika Kallio, Red Bull KTM Factory Racing +1.051
6. Jorge Lorenzo, Ducati Team +1.143
7. Cal Crutchlow, LCR Honda +1.475
8. Danilo Petrucci, OCTO Pramac Racing +1.674
9. Andrea Iannone, Team Suzuki Ecstar +1.714
10. Andrea Dovizioso, Ducati Team +1.850

Thomas Luthi topped the wet first practice session of Moto2, from Mattia Pasini and Sandro Cortese.

Miguel Oliveira led the way for a lot of the session, but dropped back to fifth towards the end. Marcel Schrotter is making his return from a broken scaphoid and put in an impressive attempt to finish fourth in the session, just 0.6 seconds off Luthi's pace. Alex Marquez is also making his injury return, and finished the session in 14th. 

Championship leader Franco Morbidelli completed the top six, but FP1 results could be more important than usual if the wet conditions continue into qualifying. 

You have to look towards the bottom of the results to find some of the top riders - Luca Marini, fresh from signing for the Sky Racing Team VR46 ended the session in 22nd, with Brad Binder just behind in 23rd. Tarran Mackenzie had an impressive run in 24th, only 0.1s off Binder's pace. Mackenzie bested the likes of Takaaki Nakagami and Misano winner Dominique Aegerter.

Top ten:

1. Thomas Luthi, CarXpert Interwetten - 2:09.869
2. Mattia Pasini, Italtrans Racing Team +0.424
3. Sandro Cortese, Dynavolt Intact GP +0.439
4. Marcel Schrotter, Dynavolt Intact GP +0.603
5. Miguel Oliveira, Red Bull KTM Ajo +0.700
6. Franco Morbidelli, EG 0,0 Marc VDS +0.731
7. Francesco Bagnaia, Sky Racing Team VR46 +0.741
8. Xavi Vierge, Tech 3 Racing +0.972
9. Augusto Fernandez, Speed Up Racing +0.992
10. Steven Odendaal, NTS +1.014

Aron Canet topped the time sheets in Moto3 FP1 from championship leader Joan Mir and Niccolo Antonelli. 

Enea Bastianini, who has finally started to get to grips with his Estrella Galicia 0,0 machine finished 0.292 seconds behind in fourth, with Jorge Martin - who is still riding with his injury, completing the top five. Mir's closest championship rival Romano Fenati finished the session in ninth, with some of the highest performing riders this season closing the session much lower down the order.

Philipp Oetll, who has been a front runner for many races this year, only managed a fastest lap of 2:01.390 putting him in 24th place behind Jaume Masia, who was so impressive as a wildcard he's been drafted into the Platinum Bay Real Estate team while Darryn Binder recovers from injury.