He would go on to be the career leader in home runs over his seasons .
This 1881 member of the Troy Trojans of the National League made history by hitting baseball 's first - ever grand slam home run .
member would go on to be the career leader in home runs over member 's seasons .
This 1881 member of the Troy Trojans of the National League made history by hitting baseball 's first - ever grand slam home run .