Jack won the prestigious Interprovincial Eights Championship stroking the Auckland eight at Kerrs Reach Christchurch in 1954.
In addition winning a red coat rowing for St Georges in the double with Don Rowlands in 1957, Jack also won the New Zealand Singles Championships at Wellington in 1951/52 and the Championship Doubles in 1951/52 at Wellington, and 1952/53 at Queenstown.