A new enemy

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Lewis Hamilton and Nico Rosberg have not enjoyed the smoothest partnership as team-mates since Mercedes became so dominant, with their relationship becoming very strained at times in 2014. However, the emergence of Ferrari in Malaysia appears to have galvanised the pair as they each find themselves with a new threat to their success this season. Rosberg tweeted this picture, with the message: "Good team factory visit today. Coming up with a plan to beat the red cars in Shanghai!"