According to Wiki a panel of the SID ranked the top-10 players of 1969 as follows:
1) Laver, 2) Roche, 3) Newcombe, 4) Okker, 5) Ashe, 6) Rosewall, 7) Gonzales, 8. Drysdale, 9) Gimeno, Stolle (tied)
The AO was played in Janaury and it was entered by Roche, Newcombe, Okker, and Ashe. That means...