The Wimbledon final will be re-staged as a charity exhibition on Rod Laver Arena on Friday night.
World No. 2 Ons Jabeur is now on Naomi Osaka's team.
Dayana Yastremska replaces two-time AO champion Osaka in the draw.
The 42-year-old Williams withdrew with an unspecified injury.
The former World No.1 wants to finish on her own terms.
Dick Savitt was the first Jewish player to win Wimbledon, the Australian and appear on Time Magazine cover.
Mardy Fish's tenure as U.S. Davis Cup captain is done.
