His rugby-playing career was brief. He played only seven games as wing forward for Otago in 1931 before injury ended his representative career, but in 1934 he was persuaded to coach the Southern Rugby Football Club’s senior team. The two Cavanaghs, both highly articulate, sharing the same breakfast table and a feisty northern Irish heritage, maintained an ongoing rivalry in which rugby discussions sometimes took on a sharp edge. Blessed with a fine memory and studying every rugby book in the Dunedin Public Library, young Vic set out to challenge his father’s coaching supremacy.
As ‘Professor of Football’ to the University, in 1929 old Vic had developed his famous ‘loose scrum’ technique to help lighter student forwards win ball in broken play. His son, quickly adapting to the new 3-4-1 scrum, modified this technique into what became known as the ‘Southern style’, and in 1935 spectacularly took Southern to the Dunedin club championship. Having wrested the Ranfurly Shield from Canterbury, the Otago Rugby Football Union appointed the two Cavanaghs as coaches to hold it throughout 1936.
Young Vic’s move to Wellington, his marriage, new managerial responsibilities and the war then interrupted the partnership, and it was not until 1945 that the younger Cavanagh again took responsibility for Otago’s representative fortunes. Unbeaten in shield games over three seasons (1947–49), his teams outscored their opponents by 374 points to 80, despite losing 11 All Blacks to the South African tour in 1949. The forward dominance he achieved attracted carping criticism, but wiser critics noted that backs claimed 66 of the 78 tries scored during his shield tenure.
Though Cavanagh was said to have been soured by missing the 1949 All Blacks coaching appointment, he was in fact rather relieved. He disliked being away from home and was already suffering from the duodenal ulcer that troubled his later life. After almost a decade in the wilderness, and increasingly concerned by rugby’s declining popularity, Cavanagh accepted election to the Otago union’s management committee in March 1959. He immediately proposed a standard code of ethics to make the game flow more freely. Introduced in Dunedin’s lower grades that season, it was designed to assist back play by tightening offside rules and binding in the scrum. The Otago union extended the code to all grades in 1961, and although wider reaction was at first mixed, Cavanagh’s code of ethics became the basis for law changes which helped transform rugby as a spectator sport.
Cavanagh was president of the Otago union in 1966 and a life member from 1967, and his standing in Otago only increased as the years passed. But he was not a man to inspire neutrality, and was not universally well liked. Round-faced, a shade short of average height, he formulated strong views and expressed them forcefully. His players, undergraduates and farmers alike, found his tough discipline invariably accompanied by fairness, zest, sportsmanship and absolute honesty, and unreservedly admired him. However, even as a devoted parent he occasionally seemed more awesome than lovable.
He died at his Dunedin home on 20 July 1980, leaving a widow and an adult daughter and son. The annual V. G. Cavanagh Memorial Trophy matches, initiated between Southern and University in 1958 to honour his father, were subsequently transformed into a lasting memorial to the substantial accomplishments of both men.
Biography and image from: https://teara.govt.nz/en/biographies/5c15/cavanagh-victor-george