Born in Lithgow, New South Wales, Shawcross was a world's top 15 player and represented Australia in the 1976 World Team Squash Championships, where he won a bronze medal.

[1][2] Shawcross became the World Amateur Champion in 1976 after defeating Dave Scott from South Africa.

One year previous he won both the Australian and British Amateur Championships.

He was unusual because he played weighing in at 101 kilograms (16 stone) and was 6 feet 2 inches tall.

This biographical article relating to an Australian squash figure is a stub.