San Francisco Giants Pitchers: Why Is Their Velocity Disappearing?

Is there an issue with the Giants' conditioning regimen, or are many of the pitchers just tired after an extended 2010?  There was much talk in spring training about the condition of the Giants' pitchers, and how their arms would react to the extra load of last year’s postseason run. 

While there were a couple of arm issues early in the year, most of the Giants starters have held up well as Cain, Lincecum, and Bumgarner are well on their way to a 200+ inning season.  The question is then, why are many of the Giants' key pitchers experiencing a decline in their velocity?

Take a look at five key pitchers who have suddenly lost miles off of their fastball.

Bleacher Report - San Francisco Giants
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