Dinneen was one of Holy
Cross’ best tennis players. The captain of the 1920
team, he also served as manager of that team and scheduled for
the first time some of the best teams in the East, including powers
Yale and Harvard. Soon after entering HC, he quickly developed
into an outstanding tennis player and became college champion by
winning the largest tennis tourney in HC history by besting a field
of 94. He's also the donor of the Edward Killeen Memorial Trophy,
emblematic of the college tennis championship.
Dinneen was also a recognized authority on the history of Holy Cross athletics and a major organizer of the Varsity Club, serving as its first secretary upon its inception in 1951. He was honored in 1970 with the "In Hoc Signo" award for long and meritorious alumni services. He passed away in 1980.