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There is a comment that "According to historians, the unusual feat set by Pipgras is a case unique in major league history". The unusual feat is left unknown. What is it?

Don't know; from the way it's written, possibly the fact that he umpired a game featuring a pitcher he had once opposed? But it occurs to me that that might apply to Lon Warneke and Bill Dinneen as well (among others), so I doubt that's the "unique" feat. MisfitToys 20:20, 6 June 2007 (UTC) reply