00:30 CET - Lorenzo Musetti is moving on in Madrid as he takes out Alex De Minaur 6-4, 6-2. The Italian continued his fine form, winning 80% of his first serve points, while he was seldom broken throughout the contest.
23:17 CET - The final match of the day sees two of the most impressive players of the clay-court season so far go head to head, with Alex De Minaur taking on Lorenzo Musetti in a repeat of the Monte Carlo semi-final.
Follow it here.
22:50 CET - The world number one has survived a serious test tonight. Aryna Sabalenka has moved into the Madrid semi-finals with a 7-6, 7-6 win over Marta Kostyuk with both sets lasting over an hour.
Sabalenka was very nearly taken to a decider, saving three set points in the final tiebreak.
22:05 CET - Lucky Loser Gabriel Diallo has come from behind to claim the biggest win of his career yet, beating Grigor Dimitrov 5-7, 7-6, 6-4 in a two-and-a-half-hour battle.
Dimitrov will be kicking himself after failing to convert three match points in the second-set tiebreak.
21:47 CET - A marathon first set in Madrid has finally been won by Aryna Sabalenka after almost one and a half hours of gripping tennis against Marta Kostyuk.
Sabalenka claimed the first set 7-6 (7-4) after a tense tiebreak decided an incredibly evenly matched first set.
18:01 CET - Elina Svitolina's stunning run of form has continued with the 17 seed beating surprise quarter-finalist Moyuka Uchijima 6-2, 6-1 in under an hour.
Svitolina has now won 11 matches in a row and hasn't even dropped a single set in those matches! Next up could be her biggest test yet though if Aryna Sabalenka can get past Marta Kostyuk tonight.
17:23 CET - What a season Jack Draper is having. The world number six has moved into the last eight on the men's side with a hugely impressive 6-2, 6-2 win against Tommy Paul.
One more win will see the 23-year-old leapfrog Novak Djokovic and move into the top five in the world rankings for the first time.
16:44 CET - Coco Gauff has stormed into the semis, beating Mirra Andreeva 7-5, 6-1 with the second set lasting just 29 minutes. The Russian initially caused her a lot of the trouble, but the American then stepped up her game.
14:54 CET - World number two Iga Swiatek has won a rollercoaster of a match against fifth seed Madison Keys, battling back after being bageled in the opening set to win 0-6, 6-3, 6-2.
In the first men's match of the day meanwhile, 16th seed Frances Tiafoe has lost 6-3, 7-5 to Matteo Arnaldi.
13:10 CET - Play is underway in Madrid - follow the women's quarter-finals here and the men's last-16 matches here.
08:50 CET - Former Roland Garros winner Jim Courier has said that Novak Djokovic's shock withdrawal from next week's Italian Open should be a huge worry for the 24-time Grand Slam champion as he heads to the French Open without a win on clay this season.
Read more about Courier's comments here.
07:20 CET - Hello and welcome to the Tennis Tracker! It's another big day on the clay courts of Madrid with the women's quarter-finals kicking off and the last-16 wrapping up on the men's side.
All four women's quarter-finals will occur today, and here's the schedule for those:
Madison Keys vs Iga Swiatek - 13:00 CET
Mirra Andreeva vs Coco Gauff - 15:00 CET
Moyuka Uchijima vs Elina Svitolina - 16:30 CET
Aryna Sabalenka vs Marta Kostyuk - 20:00 CET
On the men's side today, there will be four matches today with the last four quarter-final berths up for grabs.
Check out the men's schedule here.