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John A. Ryan vs. John M. Ryan

There seems to be some confusion about which of these is Dan Sheehan. At baseball-reference, Dan Sheehan is ryanjo03, but this page (John A. Ryan) is ryanjo02. I posted to the Retrosheet mailing list last year about this, but never received an answer. I have now written to Sean Forman as well to see if we can get some clarification. - Dewelar ( talk) 02:15, 15 July 2010 (UTC) reply