Nico Rosberg has topped the timesheets in the final practice session ahead of qualifying for the Mexican Grand Prix.
The German finished 0.014seconds faster than world champion Lewis Hamilton, but the top 10 all ended the session within a second of each other.
Daniel Ricciardo and Sebastian Vettel recorded the third and fourth fastest times respectively, while Ricciardo's Red Bull teammate Daniil Kvyat finished fifth.
Home favourite Sergio Perez was only 0.520seconds behind Rosberg and will hope to deliver a strong performance in qualifying.
Rosberg was also fastest during second practice on Friday, which was affected by rain.
Full standings: 1. Nico Rosberg 2. Lewis Hamilton 3. Daniel Ricciardo 4. Sebastian Vettel 5. Daniil Kvyat 6. Sergio Perez 7. Valtteri Bottas 8. Carlos Sainz Jr. 9. Felipe Massa 10. Nico Hulkenberg 11. Max Verstappen 12. Pastor Maldonado 13. Romain Grosjean 14. Marcus Ericsson 15. Fernando Alonso 16. Felipe Nasr 17. Kimi Raikkonen 18. Will Stevens 19. Alexander Rossi 20. Jenson Button