Strategy is likely to be at the forefront of the German Grand Prix, especially if it rains, in which case it will mostly be a question of reacting to changing circumstances with no wet-weather running seen so far this weekend and nobody having properly used wet-weather tyres during a race weekend so far this season. Already, we've had plenty of variables heading into the race, with problems for a couple of the frontrunners and different strategies used in qualifying, which means that it's difficult to anticipate exactly how the race will pan out. The two Mercedes start on what is theoretically the optimal tyre, with the Red Bull of Max Verstappen on the soft between them, but last year in Hockenheim showed just unpredictable this race can be.