Team Penske Chevrolet Will Power set the fastest time in the first practice at Barber Motorsports Park, while Takuma Sato took over in the afternoon, leading a rain-hampered session that discouraged many drivers.
The Australian finished merely 0.2s ahead of his teammate Helio Castroneves, who was himself followed by Takuma Sato in his Rahal Letterman Lanigan entry, and Sarah Fisher Hartman rookie Josef Newgarden.
KV Racing's Rubens Barrichello was fifth quickest as he showed early on that he was adapting quickly from F1 to his new surroundings.
Sebastien Bourdais was again the best of the Lotus-powered entries; the four-time Champ Car champion finishing up 16th fastest for Dragon Racing.
Things got pretty hectic in the afternoon as heavy rain forced many drivers to stay in the garage. Takuma Sato ended up the quickest driver among the ones who did venture out on the track.
Sebastien Bourdais was second-fastest with a time 0.4s slower than that set by Sato, with Ganassi's Scott Dixon rounding out the top three.
The Australian finished merely 0.2s ahead of his teammate Helio Castroneves, who was himself followed by Takuma Sato in his Rahal Letterman Lanigan entry, and Sarah Fisher Hartman rookie Josef Newgarden.
KV Racing's Rubens Barrichello was fifth quickest as he showed early on that he was adapting quickly from F1 to his new surroundings.
Sebastien Bourdais was again the best of the Lotus-powered entries; the four-time Champ Car champion finishing up 16th fastest for Dragon Racing.
Things got pretty hectic in the afternoon as heavy rain forced many drivers to stay in the garage. Takuma Sato ended up the quickest driver among the ones who did venture out on the track.
Sebastien Bourdais was second-fastest with a time 0.4s slower than that set by Sato, with Ganassi's Scott Dixon rounding out the top three.