 He fought a four fight series with Jack McGinty in Boston in 1887, which ended in a seven round win on April 19, two seven round draws in May and October, and an eight round draw on November 17, 1888.The club which sponsored their bout did not allow more than eight round bouts.Duffy defeated McGinty on February 9, 1888, by a ninth technical knockout before a crowd of around 300.