Marc Marquez was upbeat over his free practice performance on the opening day of the Dutch MotoGP, where he ran a 2014 chassis with this year's swingarm on his Repsol Honda.

Marquez set the second fastest time in FP2 behind team-mate Dani Pedrosa, lapping in 1m 33.589s as he finished 0.139s off the top with both riders lapping under Casey Stoner's circuit record.

The reigning world champion is attempting to tame his RC213V on corner entry in the braking zones, having fallen in the last two races. Marquez gave a positive update on the chassis change, which he decided to try at Assen despite just a handful of dry test laps at Catalunya.

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"Today was good and I'm happy because I think we did a normal free practice. We worked with the used tyre for the race and for the set-up of the bike," said Marquez, who is also using an updated exhaust.

"It was a long time ago when we worked like this. Also we kept the same tyres for the session to work for the race and it was good.

"On the rear I feel good but still we need to improve but I am happy because here I expect that Yamaha will be really strong and at the moment me and Dani are close and that is the most important thing for the team," he added.

"I used the 2014 chassis for all the sessions plus the new swingarm that I have used from Le Mans. It looks like it is working well and also I have a good feeling with the bike but still in some points I think we are able to improve.

"We would like to make another [chassis] comparison here but here we thought it was not a good idea because always have the conditions and if tomorrow it rains then we lose time. We will try on some tests but here we will use only 2014.

"It is more the entry in the corner where I complain all year. Still the character is there but especially I am able to be more constant on the race pace and that is important.

"The other one was very good to make one lap but then for the race with this one I can make more mistakes and try to change the line and I am able to avoid big mistakes," Marquez said.

"The other chassis was more precise and had good points but it was difficult to be like a qualifying practice all during one race."

Marquez's weekend began ominously when he fell on his out lap in FP1, a slide through the fast left-handers at the end of the lap sending him off course before tumbling on the grass.

"It was really strange and I didn't understand. It was the first lap and maybe I was off the line and the track was dirty or maybe it was the cold tyre," he said.

"In the end I went straight to the garage and it was ok. It was much slower because it was the first lap but it was strange and also scary and it was a wake-up."

Several riders tested the hard compound Bridgestone rear on Thursday but Marquez expects the soft rear tyre to be the compound of choice for Saturday's race.

"Some riders tried the hard rear but it was not bad and I think everybody will be the same - the front will be the 32 and the rear will be the soft one," he said.