Tony Kanaan's strong early season form continued Thursday when turned a lap at 125.058 mph to top practice for the inaugural Indy Grand Prix of Louisiana.

The 40-year-old Kanaan is coming off a third-place finish in IndyCar's opening race two weeks ago in St. Petersburg, Florida, where he was the only driver in the top five not racing for Team Penske.

After dominating St. Petersburg's street circuit, the Penske cars have not looked quite as strong on the 2.74 mile, 13-turn road course near New Orleans.

Scott Dixon was third-fastest, giving Chip Ganassi Racing two of the top three cars, split by Penske driver and defending series champion Will Power.

Top times were posted in hot, dry conditions in the first practice of the day. The second session was delayed and shortened by rain, and cars were slower on the damp track.