It turned out that Williams only delayed a surprising defeat.
Champion Novak Djokovic put on an impeccable serving display against Japanese Yoshihito Nishioka to canter to a 6-3 6-2 6-2 win in the third round of the Australian Open on Friday, staying on course for a record-extending eighth title at Melbourne Park.
The final set was pretty tense because both players held their places, but Wang managed to convert the match point in her favour during the American's service.
Williams was plagued by errors throughout the contest, registering a deeply uncharacteristic 56 unforced errors throughout the 2 hour, 41 minute contest. Wang made only 20.
"I think my team always believed I can do it", said 27th seed Wang, who lost 6-1, 6-0 to Williams in last year's US Open quarter-finals.
Williams owns seven trophies from the year's first major championship and this was her earliest defeat there since also bowing out in the third round all the way back in 2006. I really wish he could be here to watch me play. But I don't know.
Australian Open champion Novak Djokovic savoured his win over Jan-Lennard Struff, highlighting his grand slam success after hard first-round matches. The total score was 50 to 15. "Last match I won only one game so this time I think if I can win two or more it will be a break through".
Since coming from her maternity break in 2018, the veteran ace managed to reach four Slam finals, however, she hasn't quite managed to crack the code.
He gave her a kiss on the cheek by way of an apology, then continued on his way to a 6-3 7-6 (7-4) 6-1 victory.
Soon enough, Williams was sailing a backhand return long to cede the set.
But Williams stepped up when Wang served for the match, breaking back to 15 with a ripping forehand cross-court victor.
He is now on an eight-match win streak after leading Serbia to the ATP Cup title in Sydney ahead of the first Major of the year.
"It probably was one of the scariest moments on the tennis court because the ball was straight to the head", said Nadal.
There was to be no upset, however, as Nadal set up a second-round clash with either Argentina's Federico Delbonis or Portugal's Joao Sousa.