Cornet defeated reigning WTA Finals champion Garbine Muguruza 6-3 6-3 to reach the third round of the Australian Open for the sixth time in her career.

The 31 year-old did not offer up a single break point across the 87-minute encounter with 2020 Australian Open finalist Muguruza, who entered the tournament ranked third in the world.

It marked Cornet's third straight win over Spain's Muguruza, who is a two-time grand slam champion.

Cornet is playing in her 63rd grand slam and 17th Australian Open, yet the Frenchwoman has never progressed deeper than the fourth round at a major.

This is Cornet's 60th successive appearance in the main draw at a grand slam, meaning she is just two shy of the record held by Ai Sugiyama (62).

Should Cornet, who will play Tamara Zidansek in round three, feature in the main draw of each of this year's majors, she will set the outright record.

However, should she achieve that feat, it may well mark the end of her career.

"I'm telling myself that I'm playing probably my last year. I'm not sure yet," she told reporters.

"When I stepped on the court, I was like, You know what, just enjoy the moment because you don't know if you're going to come back. I think that's what made the difference.

"Playing a whole year, playing 100 per cent, trying to beat this record of consecutive play in a grand slam. After that, I think it will be a good time for me to retire. 

"I gave so much to this game and to this tennis life. I feel I'm pretty much ready for the next chapter.

"It's been a while [since I] beat a Top 5 player in a slam, so it's a really good feeling. 

"I really enjoyed it today, which doesn't mean I will enjoy it tomorrow! That's why when the fun is here, you have to take it. You never know how you're going to feel in the next match."

Muguruza was not the only big name to drop out on Thursday, with sixth seed Anett Kontaveit falling foul of teenager Clara Tauson.

The 19 year-old Dane needed just 79 minutes to seal a 6-2 6-4 victory that brings up her first win over a Top 10 opponent in only her second such match.

Kontaveit won 28 of her last 32 matches in 2021 to break into the Top 10.

"It's the first time I'm in the third round of a slam," said Tauson. 

"Playing a player like her to reach it, it's a really big achievement for me. Obviously, it was one of the things I really wanted to do, to beat the good players in the bigger tournaments.

"Doing it in a slam is a really great feeling. It's just a lot of hard work that I've put into it."