23:57 CET - That's a wrap on today's action in Madrid, but join us tomorrow for live coverage, which will see Jannik Sinner face the in-form Arthur Fils in a tantalising encounter before Alexander Zverev goes up against surprise package Alexander Blockx.
See you then!
23:45 CET - Marta Kostyuk is a WTA 1000 finalist! The 26th seed has moved into the final of the Madrid Open after stepping things up again in the final set to seal a 6-2, 1-6, 6-1 win over Anastasia Potapova.
She's in the form of her life now, with this victory extending her winning streak to 11 matches, and her reward is the biggest final of her career to date, against a player she has a 100% record against in Andreeva, whom she beat when they met for the first time earlier this year.
23:12 CET - Anastasia Potapova is back in the match! The Russian, now representing Austria, has won the second set against Marta Kostyuk to force a decider in the semi-final. It's now 6-2, 1-6, with both ladies winning a set comfortably.
22:43 CET - Marta Kostyuk is just one set away from the Madrid Open final after pummelling Anastasia Potapova 6-2 in the opening set of their semi-final.
22:14 CET - The second women's semi-final between Marta Kostyuk and Anastasia Potapova is now underway to close out the day in Madrid.
Follow every point of the match here!
21:46 CET - Second seed Alexander Zverev has brushed off Flavio Cobolli 6-1, 6-4 to reach the semi-finals in Madrid.
The German needed less than 30 minutes to win the first set, and while Cobolli put up more of a fight in the second, Zverev has ultimately cruised into the final four, where he will meet Alexander Blockx for a place in the men's final.
The other semi-final will be contested by Jannik Sinner and Arthur Fils. Both matches will take place tomorrow.
Zverev fired down 12 aces and won 82% of his first-serve points in the commanding victory.
20:44 CET - Alexander Zverev has absolutely flown out of the blocks against Flavio Cobolli in their quarter-final clash, with the German racing into a 6-1 lead in under 30 minutes of play!
The second seed landed an impressive eight aces in the opening set. He's not hanging around here.
20:10 CET - Play is about to start between Alexander Zverev and Flavio Cobolli in the last of the men's quarter-finals in Madrid.
Follow every point of the match live here!
18:45 CET - We have two more matches to enjoy from Madrid today, with the second women's semi-final to come after the last of the men's quarters.
Next up, from 20:00 CET, Alexander Zverev takes on Flavio Cobolli, with the German looking to avenge his defeat to Cobolli in the Munich semi-finals a couple of weeks ago. The winner will face surprise semi-finalist Alexander Blockx for a place in the men's final.
Then from 21:30 CET, Marta Kostyuk and Anastasia Potapova go head-to-head in a spicy showdown for the right to take on Mirra Andreeva in the women's decider. Stay tuned for updates from those matches!
17:52 CET - 19-year-old Mirra Andreeva has beaten Hailey Baptiste 6-4, 7-6(8) to reach the final of the Madrid Open on the women's side!
The American pushed the ninth-seeded Russian the distance in the second set, but Andreeva got over the line in under two hours to reach her first final in Madrid.
Andreeva is eying her third WTA 1000 and sixth overall title. In six previous Tour finals, she's only ever lost once.
After upsetting top seed Aryna Sabalenka in the previous round, that's the end of the road for Baptiste in the Spanish capital, but she won't be forgetting that statement win anytime soon.
Andreeva, meanwhile, will take on the winner of Marta Kostyuk and Anastasia Potapova in the decider on Saturday. The second women's semi-final takes place from 21:30 CET.
16:49 CET - Ninth seed Mirra Andreeva is one set away from the Madrid Open final, with the 19-year-old taking a hard-fought opening set in her semi-final against Hailey Baptiste.
Andreeva won all 16 points behind her first serve, while clinching the all-important break in the seventh game.
Follow every point of the second set here!
15:22 CET - Casper Ruud's title defence is over in Madrid, with the Norwegian dumped out at the quarter-final stage after a shock 6-4, 6-4 defeat to talented Belgian Alexander Blockx.
Having already seen off the likes of Felix Auger-Aliassime and Francisco Cerundolo en route to the last eight, Blockx produced another accomplished display against Ruud, winning 85% of points behind his first delivery and converting three of seven break points.
The 21-year-old, who is enjoying a superb breakout run in the Spanish capital, will face either Alexander Zverev or Flavio Cobolli in the semi-finals tomorrow.
13:19 CET - Play is now underway on the Manolo Santana Stadium, with defending men's champion Casper Ruud taking on Alexander Blockx for a spot in the semi-finals.
Follow point-by-point coverage right here.
10:00 CET - Good morning and welcome to our coverage of today’s tennis at the Madrid Open, as the women's semi-finals take centre stage, while the remaining two men's quarter-finals also take place.
The first women's semi-final sees world number eight Mirra Andreeva come up against Hailey Baptiste, with the American coming off the back of a sensational victory over Aryna Sabalenka in the last eight.
On the other side of the draw, Marta Kostyuk is targeting an 11th straight clay-court triumph when she takes on lucky loser Anastasia Potapova, with both women chasing their biggest-ever final.
Read an in-depth preview of both matches here.
Over on the men's side of the tournament, play gets started in a few hours at 13:00 CET, as Norway's Casper Ruud continues his title defence against talented Belgian Alexander Blockx in the last eight.
Later on, the men's quarter-finals conclude with second seed Alexander Zverev taking on Flavio Cobolli, with the German looking to avenge his defeat to Cobolli in the Munich semi-finals a couple of weeks ago.
Keep track of the full men's draw here and the full women's draw here.