Race coverage starts 14:30 GMT on Sunday
Hamilton on pole, Rosberg 2nd
Rosberg can win title with win on Sunday
Button out in Q1, Alonso through to Q3
BBC Radio 5 live sports extra
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Andrew Benson
Chief F1 writer in Sao Paulo
What a difference a day makes. Friday in Sao Paulo was hot and sunny. Saturday has dawned grey and windy after overnight rain. It has dried up now, despite earlier very fine drizzle, but it means the lessons learned in first and second practice, in both of which Lewis Hamilton was fastest, may be largely irrelevant.
Hi and welcome along to coverage of final practice for tomorrow's Brazilian Grand Prix.
If the grey, wet and windy weather in Blighty has got you down today, fear not, because our Brazilian cousins have been similarly affected by the elements.
We've had rain overnight in Interlagos, so let's see how that affects things today.
Free practice three is under way in 15 minutes.
To your stations, people.