Tech Analysis: This factor influenced McLaren and Ferrari’s result in China

The first sprint weekend of the year offered a different outcome to the one we were used to in the first four races of the season. Although Red Bull still looks unapproachable for every team behind, Ferrari and McLaren proved they’ll both be contenders for second place in the Constructors’ Championship this weekend. A lot will depend on the upcoming updates, but a false step from one of the two teams could represent a big chance to score many points. What was behind Ferrari's step back, and why McLaren over-performed in China.