I don't think this "first" is of any historical significance since there are tonns of these kinds of "firsts" e.g. first WS player to play first base then SS on 2 different teams, etc. I doubt if anyone really wants to go thru the boxscores unless they're really desperate.
[rant] Sure...I could have easily taken over first place by answering all of poundsman's same-page questions/answers and probably nobody would have noticed. Yet, I chose to play fairly and have the questions removed.