Both Formula One world championships have already been wrapped up but there is still plenty to play for in the final two rounds of 2017. ESPN picks out five talking points ahead of Brazil and Abu Dhabi.
The battle for second place
Two months ago, nobody would have considered Sebastian Vettel to be scrapping over the runner-up spot in the championship. But a disastrous run of results -- including two retirements -- across the three Asian races in Singapore, Malaysia, and Japan left the Ferrari driver with a mountain to climb in the championship.