1977 Australian Open (December) – Women's Singles

First-seeded Evonne Goolagong defeated Helen Gourlay, 6–3, 6–0, in the final to win the December edition Women's Singles tennis title at the 1977 Australian Open. Both players were entered in the championships as Mrs R. Cawley, as they were married to Roger Cawley and Richard Cawley (who were not related) respectively. The umpire became confused during the early stages of the final and simply referred to the players as Evonne or Helen to avoid confusion.

1977 Australian Open (December) – Women's Singles

First-seeded Evonne Goolagong defeated Helen Gourlay, 6–3, 6–0, in the final to win the December edition Women's Singles tennis title at the 1977 Australian Open. Both players were entered in the championships as Mrs R. Cawley, as they were married to Roger Cawley and Richard Cawley (who were not related) respectively. The umpire became confused during the early stages of the final and simply referred to the players as Evonne or Helen to avoid confusion.