20:37 CET - Elsewhere, Slovakia's Rebecca Sramkova has earned her country a second point of the day with a tough, battling 7-6(3), 5-7, 6-3 win over Denmark's CJ Svendsen
20:19 CET - Jessica Bouzas Maneiro has earned a point for Spain in their Billie Jean King Cup game against Brazil after beating Beatriz Haddad Maia 6-3, 4-6, 6-4.
19:30 CET - Meanwhile, Elina Svitolina has doubled Ukraine's advantage after she won her rubber 7-6(4), 6-3 over Poland's Maja Chwalinska.
18:57 CET - The three-time winner and defending champion Stefanos Tsitsipas is out of Monte Carlo! Italian Lorenzo Musetti staged a fantastic comeback to stun the Greek in a really entertaining contest, eventually sealing a 1-6, 6-3, 6-4 win and booking a spot in his first Masters 1000 semi-final.
17:49 CET - Katie Boulter has fought from a set down to defeat Tatjana Maria, 1-6, 6-3, 6-1, and as a result, has given Great Britain an unassailable 2-0 lead against Germany and thus clinching the tie.
16:30 CET - Ukraine have taken a 1-0 lead against Poland, with world No. 25 Marta Kostyuk soaring past Katarzyna Kawa, 6-1, 6-2.
16:16 CET - Absolutely incredible scenes in Monte Carlo as Alex De Minaur has completely obliterted Grigor Dimitrov, putting in an utterly ruthless performance to dispatch his Bulgarian opponent, 6-0, 6-0.
The match lasted 45 minutes, and it was a total annihliation from De Minaur, who showed no remorse for Dimitrov, who just couldn't match his intensity. He becomes the first Aussie to reach the semi-finals here since 1979.
15:45 CET - On her Billie Jean King Cup debut, Sonay Kartal has put Great Britain 1-0 up with a fabulous performance against Germany, defeating Jule Niemeier, 6-4, 6-2.
Katie Boulter will be in action next as she looks to seal the tie for the Brits.
15:10 CET - Carlos Alcaraz has outlasted Arthur Fils in the match of the week so far in Monte Carlo! The Spaniard looked to be on the backfoot for a lot of the contest, and even trailed 3-1 in the final set. However, Alcaraz showed his relisience on the dirt, mounting a comeback and defeating Fils, 4-6, 7-5, 6-3 in two hours and 26 minutes.
Fils will certainly be gutted that he couldn't take his chances, while Alcaraz is into his first Monte Carlo semi-final.
12:23 CET - Former Monte Carlo finalist Alejandro Davidovich Fokina has eased into the semi-finals in the Principality, clinching a 6-3, 6-2 victory over a really disappointing Alexei Popyrin. The latter made 31 unforced errors in the hour and 10 minute clash, struggling to find his best tennis.
10:55 CET - Play is set to get underway in around ten minutes in Monte Carlo, with Alejandro Davidovich Fokina facing Alexei Popyrin in the first quarter-final.
You can follow that clash live with Flashscore.
10:05 CET - Marina Stakusic has clinched the decisive victory to give Canada the tie against Romania, beating Anca Alexia Todoni, 6-4, 6-3.
18-year-old Victoria Mboko had earlier put the Canadians 1-0 up with a 6-1, 6-4 win over Miriam Bianca Bulgara.
09:00 CET - There has already been some news from the Billie Jean King Cup as Kazakhstan have booked their spot in the Finals, with Elena Rybakina and Yulia Putintseva cruising to comprehensive wins.
You can read more about that here.
08:55 CET - Good morning and welcome back to the Tennis Tracker this Friday morning!
It is a big day at Monte Carlo, with players looking to reach the semi-finals at the first clay-court Masters event of the year.
Up first at 11:00 CET, former finalist and clay-court specialist Alejandro Davidovich Fokina takes on Alexei Popyrin, after the pair yesterday beat Jack Draper and Casper Ruud respectively.
That will be followed by an absolutely sensational prospect as young guns Carlos Alcaraz and Arthur Fils meet for the first time.
Grigor Dimitrov will then go head to head with Alex De Minaur, before three-time winner and defending champion Stefanos Tsitsipas closes out the day against Lorenzo Musetti.