Lewis Hamilton has insisted his tense relationship with Nico Rosberg has "not caused any problems" for Mercedes, despite Toto Wolff's claim that it represents the world champions' "biggest weakness" and could force a change. Just three days after Mercedes capped their second double title-winning season with their 16th win and 12th one-two finish of the year, team boss Wolff caused a stir by suggesting they could be forced to split up the Hamilton-Rosberg partnership if the drivers' fractious relationship started to have a negative effect on the wider harmony inside the team. Wolff added that there was "lots going on behind closed doors" after a period of races...
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