Despite the decline of offensive output in MLB since 2006 (teams have gone from 4.86 runs-per-game to 4.20), no starting pitcher since Roger Clemens in 2005 has finished a season with an ERA under 2.00. Clayton Kershaw of the Los Angeles Dodgers is on pace to change that in 2013. The 25-year-old southpaw, who won the 2011 National League Cy Young award, has a 1.91 ERA in 174.1 innings pitched. The pitcher with the most sub-2 ERA seasons in the last 50 years is the player to whom Kershaw most often draws comparisons, Sandy Koufax, another hard-throwing lefty with a devastating curveball.

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