[5] In 1948 he won the South Australian Close Championship at Royal Adelaide, beating professional Jim Mills in an 18-hole playoff, after the two had tied on 153 in the 36-hole event.

[8] In 1950, Stevens again reached the final of the South Australian amateur championship, but lost to Bill Shephard by 1 hole.

[13][14] At the end of 1952 Stevens was a late replacement in the Australian team to tour New Zealand, playing in a number of events including the Sloan Morpeth Trophy.

[16] Soon afterwards he won the South Australian Open title with a score of 147, four strokes ahead of Rymill and Bill Ackland-Horman.

[18] However, his mother died and he travelled back to Adelaide, returning to Sydney a few days later to defend his Australian Amateur title.

[23] In 1958, Ampol sponsored a 36-hole tournament at The Grange in Adelaide, with total prize money of £500, just before the Australian Open at Kooyonga.

Stevens won the event with a score of 138, six ahead of Eric Cremin, Harold Henning and Kel Nagle who tied as runners-up.

For the United States, Charles Coe scored 73, Billy Joe Patton 75 and Bud Taylor 76 for a total of 224, giving Australia a two stroke win.

[29] Just before his 50th birthday, Stevens reached the quarter-finals of the 1978 Australian Amateur, losing to the eventual winner, Mike Clayton.