Marcos Ambrose led both NASCAR Sprint Cup Series practice sessions Saturday at Infineon Raceway for Sunday's Toyota/SaveMart 350.

Ambrose recorded a fast lap in the first practice session at 93.770 mph to lead Jeff Burton, A. J. Allmendinger, Jimmie Johnson and Martin Truex, Jr.

The Australian road course ace led Jamie McMurray, Jeff Burton, Jimmie Johnson and Kevin Harvick in Happy Hour with a lap at 93.262 mph.

The Toyota/SaveMart 350 will be broadcast live on TNT Sunday, June 20, 2010 at 3 pm ET.

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