Recent Toro Rosso Formula 1 signing Daniil Kvyat set the fastest time in free practice ahead of the GP3 Series title-decider in Abu Dhabi.
MW Arden driver Kvyat lapped the Yas Marina track in 1m57.130s, just 0.028 seconds clear of Alexander Sims of Carlin.
Kvyat's fellow Red Bull junior Carlos Sainz was third fastest, ahead of the second Carlin car of Nick Yelloly.
Points leader Facu Regalia of ART was only 12th fastest. He holds a seven-point lead going into qualifying.
Of the other title contenders, all of whom have an outside chance, Kevin Korjus was sixth, Conor Daly was ninth, Jack Harvey 10th and Tio Ellinas 18th.
Dean Stoneman was eighth fastest in his GP3 debut, with returnees Robert Cregan 20th and Alice Powell 21st.
Pos Driver Team Time Gap
1. Daniil Kvyat MW Arden 1m57.130s
2. Alexander Sims Carlin 1m57.158s +0.028s
3. Carlos Sainz Jr MW Arden 1m57.299s +0.169s
4. Nick Yelloly Carlin 1m57.449s +0.319s
5. Patric Niederhauser Jenzer 1m57.574s +0.444s
6. Kevin Korjus Koiranen 1m57.704s +0.574s
7. Giovanni Venturini Trident 1m57.849s +0.719s
8. Dean Stoneman Koiranen 1m58.249s +1.119s
9. Conor Daly ART 1m58.250s +1.120s
10. Jack Harvey ART 1m58.324s +1.194s
11. Robert Visoiu MW Arden 1m58.396s +1.266s
12. Facu Regalia ART 1m58.461s +1.331s
13. Alex Fontana Jenzer 1m58.575s +1.445s
14. Emaneule Zonzini Trident 1m58.672s +1.542s
15. Patrick Kujala Koiranen 1m58.710s +1.580s
16. Dino Zamparelli Manor 1m58.735s +1.605s
17. Luis Sa Silva Carlin 1m58.793s +1.663s
18. Tio Ellinas Manor 1m59.257s +2.127s
19. Robert Cregan Trident 1m59.340s +2.210s
20. Jimmy Eriksson Status 1m59.769s +2.639s
21. Alice Powell Bamboo 2m00.261s +3.131s
22. Josh Webster Status 2m00.371s +3.241s
23. Ryan Cullen Manor 2m00.687s +3.557s
24. Samin Gomez Jenzer 2m01.075s +3.945s
25. Carmen Jorda Bamboo 2m02.001s +4.871s
26. Adderly Fong Status 2m04.084s +6.954s