Djokovic, the No. 1 seed in the tournament, was trailing Pablo Carreño Busta, 6-5, in the first set of a fourth-round match.
"I don't usually have much interest in sharing my injuries," Sharapova wrote.
IBM's Watson is used for customer service as well as to cull match highlights.
The claycourt legend is one French title away from tying Margaret Court's record of 11 titles at a single grand slam tournament.
The Tunisian underdog beat world No.6 Dominika Cibulkova in Roland Garros on Thursday.
Tennis' only clay major is finally attempting to modernize.
Williams won her 23rd Grand Slam singles title at the Australian Open in January, when she was already close to two months pregnant.
The tennis star was sidelined for using the drug after anti-doping authorities blacklisted it.
Novak Djokovic lost his last Grand Slam match as a man in his 20s, opening up more questions about how he'll fare in his next decade.
Djokovic was the second seed in Melbourne.
Federer has not played a Grand Slam since Wimbledon 2016.
Wawrinka won his first Grand Slam at 28.
Williams is tied with Steffi Graf on 22 Grand Slam singles titles.
Murray was beaten in the final by Djokovic in 2015.
The 22-times Grand Slam winner was troubled by a knee injury.
The world No. 2 is due to play Frenchman Richard Gasquet on Tuesday.
The 34-year-old withdrew from the French Open on Thursday.
This is an unusual way to prepare for an important match.
Rosalyne Bachelot suggested his absence from the game in 2012 was not due to injury.
The American is one major behind the retired star.
The Serbian world number one had a brilliant 2015.
Follow Andy Murray's Australian Open final against Novak Djokovic using our television, radio and streaming guide.
Follow Andy Murray's progress through the Australian Open with our live television guide.
Allegations of match-fixing have provoked an independent review of anti-corruption practices in tennis.
Victory over Zhang Shuai sent Britain's top-ranked female player into the Australian Open semi-finals.
Murray's father-in-law Nigel Sears collapsed during the British No. 1's round of 16 match.
The 17-time Grand Slam winner admits the prospect of his children playing tennis is not exciting.
The multiple Grand Slam winner failed to turn up to a press conference after the defeat.