There's been rain in the skies above Montreal, but the drivers will be hoping the clouds hold their water for all three practice sessions. Getting to grips with the difficult Circuit Gilles Villeneuve is the first task - a faster track than Monaco, but with the same soft and supersoft compounds on offer. The grip levels vary throughout the weekend, but for the first two sessions it's fair to say the track will be very green. Look for anyone that may hit the Wall of Champions on their way round, it's a time-honoured tradition!