At the 1952 Summer Olympics, Tinnock competed as part of the men's coxed four without progressing through to the finals. He is listed as New Zealand Olympian athlete number 75 by the New Zealand Olympic Committee.[2]
Tinnock married tennis player Judy Burke in about 1955, and the couple went on to have two children.[3] He died on 3 April 2017.[4] His wife, Judy Tinnock, died in 2025.[5]
↑Bignell, Jill (February 2020). "Blast from the past – Judy Tinnock"(PDF). Newsletter. International Lawn Tennis Club of New Zealand. p.5. Retrieved 24 September 2025.