A month ago very few people would have bet that Mercedes would fail to win any of the opening three races of the Formula 1 season.
It's incredibly close in F1 at the moment. The days of Lewis Hamilton and Nico Rosberg droning around at the front of the field - basically able to finish one-two unless they broke down or crashed into each other - seem like another lifetime.
It's now a six-car fight, and Mercedes has to get everything right to beat Ferrari and Red Bull. The early races of this season have put a focus on one particularly important aspect - communications in races, and in particular the need to keep the drivers fully aware of what is happening around them and how hard they have to push at a particular time.