I
may have it.
July 25 1913, Mgr Carrigans' first game as leader of the World's Champions.
Boston 7
Chicago 5
Of course, I say this because I'd just remembered. I already have a '13 Fenway ticket (vs the CWS)... Therefore, I'm no closer than I was at the start.
Perhaps, the only way to pin it down. Is to find the dates that damn, wooden bovine occupied centerfield.