Practice for the Spanish Grand Prix begins today, and Formula 1’s first competitive laps of the Madring will answer questions the sport has been arguing about all week. Five things worth watching:

1. Whether the track survives contact with reality. Every prediction this week — Sainz’s red flags, Verstappen’s “big shunts”, the car-killer label — gets tested from the first flying lap. Watch how much track evolution FP1 shows and how many drivers sample the run-off. The banked La Monumental corner will be the reference point for everything.

2. Charles Leclerc’s state of mind. Cleared to race after his enormous Monza accident, and spared an engine penalty despite the crash damage, Leclerc arrives carrying both physical questions and what Ferrari insiders describe as psychological pressure in his fight with Lewis Hamilton. A clean, fast Friday would quiet a lot of noise.

3. Alpine on the straights. The folding rear wing that powered Pierre Gasly’s Monza pole should, in theory, suit the Madring’s long acceleration zones. If Alpine is quick again, the Monza shock becomes a pattern — and the midfield order for the rest of the season starts to look different.

4. Mercedes‘ internal weather. First race since the VSC controversy, first race since the boos, and the first chance to see whether the Russell-Antonelli dynamic has been managed or merely survived. Radio traffic will be scrutinised like state broadcasts.

5. McLaren‘s rear wing retreat. The team has dropped its H-wing concept for Madrid, an admission that the device wasn’t delivering. Whether the conventional package restores Norris and Piastri to the podium fight matters for the constructors’ battle — and for the mood inside a garage still processing Monza’s flashpoints.

FP1 gets underway this afternoon. Expect yellow flags, expect complaints about kerbs, and expect everyone to pretend they weren’t watching the timing screens during installation laps.

One more thing: the stewards’ weekend

Spare a thought for race control, whose weekend may be the hardest of anyone’s. A new circuit means no precedent library: every track-limits line, every unsafe-release judgment, every yellow-flag zone gets defined in real time, in front of teams that have spent the season demonstrating exactly how far they will litigate a marginal call. The Monaco appeal saga has raised the cost of every decision — and the Madring’s walls will generate plenty to decide.

The drivers’ briefing on Friday will matter more than most: expect debate over the pit entry, the banked corner’s limits, and what constitutes a completed lap in the likely event of red flags in qualifying. None of it will make highlight reels. All of it may decide Sunday.