Bill James lists his top 100 pitching duels of 2011. The most interesting tidbit comes at the end:

What did I really learn from doing this? One thing: Umpires’ mistakes are greatly magnified in a pitchers’ duel. If you look at ordinary games, maybe one in 50 turns on an umpire’s mistake. If the pitchers are dominant, it goes to more like one in ten.

I wish Bill published his formula. It would be cool to rate games along these lines in the future.

Hat tip, Bronx Banter.