[1] Later in the year he finished runner-up to George Harvey at the South African Tour's Qualifying School and he turned professional in November 1973.

The final round was a "tense duel" between the overnight leaders and Oosthuizen actually outplayed Player, the defending Masters and Open champion, by one shot through 16 holes.

[5] The following month Oosthuizen would record a second runner-up finish in South Africa, this time to compatriot Vin Baker at the ICL International.

This time it was to John Bland on the 5th extra hole at the Holiday Inns Open, an event in Swaziland.

In the Penfold PGA Championship, he was joint leader after 36 holes with Peter Oosterhuis but a third round 81 dropped him well down the field.

[10] Southern Africa Tour playoff record (0–2) Note: Oosthuizen only played in The Open Championship.