On Saturday after qualifying, I wrote about how one of motorcycle racing’s defining characteristics is its unpredictability. That was written in response to a thrilling qualifying session that saw Jack Miller take pole by rolling the dice on slicks on a drying track, and outperforming everyone else.

The rest of the grid had been pretty unpredictable too: Tito Rabat in fourth on the Reale Avintia Ducati GP17. Marc Márquez, the man who had been fastest by a country mile all weekend, only starting in sixth. Three first-time pole sitters in the three Grand Prix classes. Saturday at Argentina defied expectations.

Sunday at the Termas De Rio Hondo circuit made Saturday look positively straight-laced. Wild doesn’t even begin to cover the events on race day. There were Moto3 riders gambling on slicks on a track with just a very narrow dry line.

There were new names and fresh faces at the front of the Moto2 race, a thriller that went down to the wire. But when MotoGP came around, even those events were made to look positively mundane.

So much happened that it will take several days to digest, let alone do justice to in writing. There were so many facets to this race that I will need more than one report to deconstruct it all. For now, we will start at the beginning, and work our way forwards from there.

It all begins with the weather. Heavy rain all night, followed by the track drying out through the course of the Moto3 and Moto2 races left the track in a difficult condition.

The Moto2 bikes and their fat Dunlop rubber had at least cleared out a dry line around most of the track, but it was not very wide in places, and there was water crossing the track. Then a light rain started to fall as the riders prepared to leave pit lane, making them choose wets instead of slicks.

All except Jack Miller, that is, who rolled the dice on slicks once again, determined to seize an advantage wherever he could find it.