The greatest Formula One championship battles
The title race goes down to the wire in Brazil on Sunday after Sebastian Vettel failed to finish 15 points ahead of rival Fernando Alonso at the US Grand Prix.
There have been some great battles over the years from Jim Clark, Jackie Stewart and Graham Hill in 1965 to Ayrton Senna against Alain Prost in 1989.
We look back at some classic Formula One tussles that saw competitive rivalry turn into fierce battle.
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