Kyle Busch posted the fastest single lap of practice in the first Saturday session with a speed of 184.037 mph. His brother Kurt was not far behind: the No. 2 posted a lap of 183.486 mph, which was third best.
In fact, Kyle won practice overall; he also posted the quickest average speed of 181.725 mph during 30 laps.
Our View Of the two, Kyle has a much greater chance of finishing up front. He's finished 11th or better at Vegas in all but one of his starts.
Kurt's average speed of 180.499 was only 14th quick, which is about where you can expect to find him at the end of a typical Vegas race.
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