If the second day of practice for the 2016 MotoGP season taught us anything, it taught us that everything is still wide open.

Yesterday, the Movistar Yamahas were clearly a cut above the rest during FP1. During the two free practice sessions on Friday, the top of the timesheets looked a little different.

In FP2, it was a wild mixture of Ducatis, Hondas, and Maverick Viñales on the Suzuki GSX-RR. In FP3, when the stakes were raised with direct entry to Q2 on the table, Jorge Lorenzo put his Yamaha M1 back into contention, but his previous clear superiority from Thursday was gone.

The reason? There isn’t a single cause you can put your finger on. In FP2, the Movistar Yamaha riders spent their time working on tire choice, and especially the tricky task of figuring out which front tire to use in the race.

That differs depending on which bike you happen to be riding: the Hondas are trying to make the hard front work, with different success, the Yamahas have abandoned the hard for the medium, and may even race with the soft, while the Ducatis are caught in a similar dilemma.

The Hondas – at least, the factory bikes – made a big step forward with electronics, and that made the competitive. Or rather, it was a step backwards, reverting to the settings Marc Márquez had tried in the test.

“Yesterday, we changed a small thing that we expected normally would not be a big difference on the bike on riding, but this time was a big difference with these electronics,” Marc Márquez explained. Dropping that change made a massive difference, and Márquez was competitive in both sessions on Friday.

The one constant through all three sessions of free practice has been Andrea Iannone: third fastest on Thursday, fastest in both FP2 and FP3 on Friday. “A perfect day,” was how he described Friday. He was far from complacent, however. “Just because I am first, it doesn’t mean we are completely ready.”