Strategy was clearly at the forefront of the Spanish Grand Prix, with a fascinating and complex battle between Mercedes and Ferrari. The nominations we made opened up a number of different possibilities, enabling each team to make the most of their potential. Despite the demanding conditions of the Montmelo track and significant track temperatures, both compounds performed perfectly, showed very little graining and no blistering, helping every driver to maximise his chosen strategy. We look forward now to the test, which will help us gather more data to shape future tyre development.