Greg Biffle Heads Top 20 Coming out of Las Vegas in NASCAR Power Rankings

The NASCAR Sprint Cup Series leaves the Las Vegas Motor Speedway after its first real barometer reading of the season.The first mile-and-a-half track had the powerhouse teams dominating all day long. Although a few interesting names made their way up front right at the end.While we see a lot of the typical names running up front, we are starting to see new names make their way up the leaderboard and in my power rankings.  Let's take a look at my power rankings after the Kobalt Tools 400.Begin Slideshow...

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