Lewis Hamilton has hinted he is open to having an even more "lively" rivalry with his teammate and 2014 championship opponent Nico Rosberg.
When the duo was first paired together at Mercedes, they happily recalled their friendship dating all the way back to boyhood, featuring jocular wrestling and pizza-eating contests.
And Rosberg said as recently as last week that Hamilton, the winner of the last four grands prix on the trot, is still welcome to knock on his Monaco apartment and ask for a quick hamburger.
But as Hamilton sniffs his first title since 2008, the Briton is starting to take his boxing gloves off.
In an interview in Monaco, he claimed he is "hungrier" than...
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