Career
Wyllie began his first-class career with Canterbury in 1964 and played 210 matches for the province until 1979, serving as captain on over one hundred occasions. Wyllie finally became an All Black in 1970 when he was selected to tour South Africa where he played in the second and third Tests. In the next three years, he played forty matches for the All Blacks, including eleven Tests, and was captain on three occasions.
Although he was discarded as an All Black after 1973, Wyllie remained a prominent player for Canterbury until 1979.
In 1988 Wyllie succeeded Lochore as coach, much to the annoyance of many, especially in Auckland, who favoured Hart. Despite initial success as All Black coach, a decline starting in the 1991 season led to the NZRFU appointing Hart as joint coach for the 1991 World Cup.
After the unsuccessful campaign, both coaches were overlooked when Laurie Mains was selected as All Black coach. Wyllie went on to take various coaching roles in England, Ireland, South Africa and Argentina and from 1996-1999 was in charge of the Argentina national side, taking the Pumas to the quarterfinals at the 1999 World Cup.
In June 2009, Wyllie was reported to have attended the retirement ceremony for Argentina national side Captain, Agustín Pichot.