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It seems hard categorizing the types of rivalries. The Yankees-Dodgers for example started in the Subway Series, but then it moved beyond that. The A's-Giants started as regional and then became more specifically regional. The A's-Phillies was intra-city, but then moved beyond it (died out). I'm not sure if we can really categorize things like that. I think the AL,NL,Interleague categories are fine.
That is, until they come up with a Brewers-White Sox rivalry article, which started in the AL now is interleague. Arnabdas (talk) 17:50, 13 January 2011 (UTC)
I agree and would like to see those sub-sub-categories removed. --Muboshgu (talk) 19:23, 13 January 2011 (UTC)