Does Matt Cain's perfect game belong among the greatest ever pitched? According to Bill James' Game Score method, Cain is tied with Sandy Koufax's perfect game (1965) and Nolan Ryan's seventh no-hitter (1991) for the second-best pitching performances of all-time -- behind Kerry Wood's 20-strikeout game (1998). But many believe Don Larsen's perfect game in the 1956 World Series trumps them all. How do you rate Cain in the pantheon of great pitching performances?

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