19:15 CET - The final match of the day has been won by fifth seed Alex De Minaur, with the Australian battling to a 7-6, 2-6, 6-2 victory over Cameron Norrie.
The opening set was a real thriller, with De Minaur clinching it in one hour and five minutes, and after dropping off in the second, he then finished the job.
16:33 CET - A clash between two real entertainers has been won by eighth seed Alexander Bublik, who has won 6-4, 6-4 against French veteran Gael Monfils, who played well but didn't deliver in the big moments, having his serve broken in the final game of each set. As a result, the icon bids farewell to the tournament he made the final of in 2016.
2024 finalist Casper Ruud is through thanks to a 6-3, 6-4 victory over Australia's Alexei Popyrin. Being something of a clay-court specialist, the Norwegian player is one to watch this week
15:05 CET - The second set was tougher going for Alcaraz, with Baez fighting back from 4-1 down to make it 4-3, but the world number one kep his cool to seal a 6-1, 6-3 victory and begin his clay-court season with a win.
14:16 CET - Carlos Alcaraz has taken to the clay like a duck to water, winning his first set of the year on the red stuff 6-1 in just 27 minutes.
Follow every point of the rest of his match with Sebastian Baez here.
13:39 CET - It's been a mixed day for good friends and Grand Slam semi-finalists Grigor Dimitrov and Hubert Hurkacz, with the former losing 6-4, 2-6, 6-3 to Tomas Martin Etcheverry and the latter beating Luciano Darderi 7-6, 5-7, 6-1.
13:30 CET - Second seed Jannik Sinner has cruised into the last 16 with a real blink-and-you 'll-miss-it performance, beating Ugo Humbert 6-3, 6-0 in just over an hour.
The Italian didn't face a single break point and dropped just two points on his first serve in the entirety of the match, starting his clay-court season in style.
12:05 CET - In sad circumstances, Matteo Berrettini is through to the next round in Monte Carlo. The big serving Italian was leading 4-0 and cruising towards taking the first set when Roberto Bautista Agut was forced to retire through injury.
11:30 CET - Play is well underway between Matteo Berettini and Roberto Bautista Agut in Monte Carlo for what promises to be an action-packed Tuesday! The Italian wildcard has raced into a 3-0 lead after an early break of serve.
09:00 CET - Welcome to our coverage of the Monte Carlo Masters this Tuesday morning, with the second round getting underway in Monaco, while the last few first-round matches also come to an end.
These one-week 1000 events get to business from the off, and the schedule today illustrates that.
Play begins at 11:00 CET, with wildcard Matteo Berrettini getting proceedings underway on Court Rainier III against lucky loser Roberto Bautista Agut.
Things really begin to spice up after that when world number two Jannik Sinner begins his clay-court season against Ugo Humbert, while also looking to extend his record of 34 consecutive sets won at Masters events.
Defending champion Carlos Alcaraz will follow as he aims to fend off Sinner and hold onto his world number one ranking, with Sebastian Baez his second-round opponent.
Finally, expect a match full of pure entertainment, as 39-year-old Gael Monfils - who is playing for the last time at Monte Carlo - meets the enigmatic eighth seed Alexander Bublik.
On Court des Princes, Grigor Dimitrov kicks things off against Tomas Martin Etcheverry, before Jakub Mensik clashes with Fabian Marozsan.
Casper Ruud then returns to his favourite surface against Alexei Popyrin, followed swiftly by a meeting between Alex de Minaur and Cameron Norrie.
On the other courts, the likes of Luciano Darderi, Corentin Moutet and Marin Cilic will also be in action, and we will keep you up to date with all the results right here!