Scott Dixon was quickest as the three title contenders led the way in Friday morning practice for the IndyCar finale at Homestead.
Points leader Dixon (Ganassi) set his 25.1968s time on only his second flying lap of the session, having sat in the pits at first saving tires and waiting for rubber to build up on the oval.
His run usurped Penske's Ryan Briscoe, who comes into the event eight points behind Dixon. The Australian retained second ahead of Dixon's teammate Dario Franchitti, who sits between them in the standings.
Mario Moraes was the quickest among the rest of the field, beating Briscoe's team-mate Helio Castroneves to fourth. KV Racing's Moraes had been extremely fast in pre-season testing at Homestead and appears set to carry that form into the race weekend.
Newman/Haas/Lanigan's newcomer Alex Lloyd had led the opening half-hour, reserved for rookies and drivers outside the top ten in the championship. The former Indy Lights champion, making only his third IndyCar appearance, held on to eighth behind teammate Graham Rahal and Vision's Ed Carpenter in the rest of the session.
Sarah Fisher, who has a new chassis at her self-run team this weekend, was second to Lloyd in the first segment and ended the morning an impressive ninth, ahead of rookie points leader Raphael Matos (Luczo Dragon).
Pos Driver Team Time Gap
1. Scott Dixon Ganassi 25.1968s
2. Ryan Briscoe Penske 25.2191s + 0.0223s
3. Dario Franchitti Ganassi 25.2267s + 0.0299s
4. Mario Moraes KV 25.3245s + 0.1277s
5. Helio Castroneves Penske 25.3527s + 0.1559s
6. Graham Rahal Newman/Haas/Lanigan 25.3665s + 0.1697s
7. Ed Carpenter Vision 25.3698s + 0.1730s
8. Alex Lloyd Newman/Haas/Lanigan 25.3769s + 0.1801s
9. Sarah Fisher Fisher 25.4296s + 0.2328s
10. Raphael Matos Luczo Dragon 25.4495s + 0.2527s
11. Danica Patrick Andretti Green 25.4700s + 0.2732s
12. Hideki Mutoh Andretti Green 25.4857s + 0.2889s
13. Tony Kanaan Andretti Green 25.5109s + 0.3141s
14. Tomas Scheckter Dreyer & Reinbold 25.5127s + 0.3159s
15. Marco Andretti Andretti Green 25.5233s + 0.3265s
16. Dan Wheldon Panther 25.5516s + 0.3548s
17. Milka Duno Dreyer & Reinbold 25.5759s + 0.3791s
18. Justin Wilson Coyne 25.5931s + 0.3963s
19. Ryan Hunter-Reay Foyt 25.6460s + 0.4492s
20. EJ Viso HVM 25.6465s + 0.4497s
21. Mike Conway Dreyer & Reinbold 25.8506s + 0.6538s
22. Robert Doornbos HVM 25.9817s + 0.7849s
23. Jaques Lazier 3G