Monfils joined Roger Federer as the only men to achieve this age-defying feat, before Svitolina eliminated No. 4 seed Jasmine Paolini later in the day.
As we head towards the Quarter-Final line-up being set, the schedule of the main matches to watch on Monday 20 January at the 2025 Australian Open is here as the second week begins in Melbourne.
The 2025 Australian Open runs from January 12-26. Tennis fans can follow Sports Illustrated's Serve on SI for all the most important news from the sport.