12:28 CET - Joao Fonseca has moved into his very first Masters 1000 quarter-final after an authoritative 6-3, 6-2 victory over Matteo Berrettini.
It was a super strong performance from the 19-year-old, commanding points from the off after landing 70% of first serves. However, Berrettini really struggled throughout the match, making just 45% of his first serves and committing 24 unforced errors. He was nowhere near his best.
According to Opta, Fonseca has now become the youngest player to reach the Monte Carlo quarter-finals since Rafael Nadal in 2005. The Brazilian will face either third seed Alexander Zverev or Zizou Bergs next.
11:04 CET - Right then, the players are heading out onto court and play is set to get underway in the coming minutes.
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09:00 CET - Good morning and welcome back to our live coverage of the Monte Carlo Masters, on a really fun day of third-round action.
Play is set to get underway at 11:00 CET, with third seed Alexander Zverev taking on Zizou Bergs, and Joao Fonseca clashing with Matteo Berrettini in what is going to be a really lively contest. Both players will have tonnes of support, and the atmosphere will be fantastic.
Court Rainier III then sees Jannik Sinner continue his quest for the world number one ranking against Tomas Machac, before Carlos Alcaraz looks to fend him off when he comes up against Tomas Martin Etcheverry.
Last up on the main court, home favourite Valentin Vacherot, who defeated last year's runner-up Lorenzo Musetti in the second round, faces Hubert Hurkacz.
Following Fonseca vs Berrettini on Court des Princes, sixth seed Felix Auger-Aliassime faces an extremely tough test against clay specialist Casper Ruud, who looked so comfortable with the red dirt under his feet in his win over Corentin Moutet.
Jiri Lehecka will then want to continue his good form after reaching the final in Miami with some strong performances on the clay, but eighth seed Alexander Bublik stands in his way.
Finally, Alex de Minaur goes head-to-head with surprise package Alexander Blockx, who is into the third round after coming through the qualifiers.