San Francisco Giants: Is Ryan Vogelsong Their New Ace?

Matt Cain pitched a perfect game. Tim Lincecum is the freak. Madison Bumgarner has been fantastic at times. Even Barry Zito has had his moments. 

I have a trivia question for you. Since the start of the 2011 season, which San Francisco Giants starter has the lowest earned run average? What Giants starter has the highest winning percentage in that period of time? What Giants starter has pitched into the seventh inning every start but one this season?  

The answer to all of these questions is Ryan Vogelsong. 

Vogelsong has quietly become the Giants' most consistent start...

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