Nico Rosberg does not regret the souring of his friendship with Lewis Hamilton as they fought each other for the Formula 1 world title.
Rosberg had already been with Mercedes for three seasons when Hamilton joined in 2013. They were told that neither would be given preferential treatment and were allowed to race each other, with the German certainly holding his own against the 2008 world champion.
And during that first season, with Sebastian Vettel winning his fourth title in a row with Red Bull, there was relative harmony with the exception of one or two moments. But with the start of the hybrid era in 2014 came unprecedented success for Mercedes – and the start of a real rivalry.
