He came to HC on a baseball scholarship, but ended up running track with Olympian Andy Kelly, specializing in the 440 and the relays. However, Duffy is best remembered and known as one of the greatest track and field coaches even in the country. He coached for 37 years, beginning in 1933 at Ridge Tech in Boston where he produced many state and New England champions and developed three Olympians, Ed Collymore, Charlie Jenkins and John Thomas. Duffy coached at Holy Cross for 10 years, beginning under the late and legendary Bart Sullivan, and in the 10 years Duffy was here, Holy Cross won three New England championships. Among the athletes he coached at HC were Kevin O’Brien, John Collins and Art Dulong, all former IC4A and New England champions who also were Crusaders of the Year. He passed away in 1987.