14:15 CET - Kazakhstan duo Alexander Shevchenko and Alexander Bublik have moved into the quarter-finals of their respective tournaments in Chengdu and Hangzhou, both battling from a set down to claim victories.
13:27 CET - Emma Navarro has once again shown that she is made of seriously stern stuff, overcoming a real valiant effort from Sonay Kartal, winning 3-6, 6-4, 6-3 to put USA 1-0 up against Great Britain.
Kartal led by a set and a break, but Navarro fought back to give her nation the advantage. Jessica Pegula now has the opportunity to send USA into the final when she takes on Katie Boulter.
13:16 CET - It will be a meeting of the top two seeds in the Seoul final, after Ekaterina Alexandrova was too good for Katerina Siniakova, beating the Czech star 6-4, 6-2 to set up a meeting with Iga Swiatek.
11:40 CET - Lorenzo Musetti was really pushed by world number 121 Dino Prizmic in Chengdu, but in the end, the top seed had enough to seal a 7-5, 3-6, 6-2 win and book a quarter-final spot.
It wasn't good news for the top seed over in Hangzhou, however, as Andrey Rublev was stunned by qualifier Valentin Royer, falling 6-4, 7-6(2) to the Frenchman in his opening match.
11:16 CET - Top seed and world number two Iga Swiatek was in typically ruthless form, soaring into the Seoul final without breaking a sweat after claiming a 6-0, 6-2 victory over talented 19-year-old Maya Joint. It is her fifth final of 2025.
11:00 CET - We are just minutes away from the second semi-final between the USA and Great Britain at the Billie Jean King Cup Finals.
Up first is Emma Navarro vs Sonay Kartal, before Jessica Pegula meets Katie Boulter.
Follow the singles action live with Flashscore!
10:58 CET - A barely-believable gruelling blockbuster has just taken place in Hangzhou, with fourth seed Corentin Moutet getting the better of fellow Frenchman Arthur Cazaux, eventually winning 6-7(1), 6-3, 7-6(3) in a whopping three hours and 49 minutes. Moutet saved two match points on his way to victory.
09:31 CET - Home favourite Yibing Wu has overcome American Sebastian Korda, battling to a 4-6, 6-1, 6-4 victory in a little under two hours to book a quarter-final spot in Hangzhou. A great win for a player riddled by injuries.
09:12 CET - Tomas Martin Etcheverry has eased into the Hangzhou last eight after a 6-1, 6-4 victory over Rinky Hijikata.
09:06 CET - In Chengdu, Nikoloz Basilashvili and Taro Daniel both claimed wins to move into the quarter-finals, with the latter upsetting third seed Tallon Griekspoor.
08:19 CET - Second seed Ekaterina Alexandrova has eased into the Seoul semi-finals, seeing off Ella Seidel 6-2, 6-3 in an hour and 18 minutes. She will be back on court a little later on for her last-four clash.
And she will be taking on Katerina Siniakova, whose impressive run continues as she has just sealed a 6-1, 7-5 win over Suzan Lamens.
08:04 CET - The day's play has come to an end at the Laver Cup, with Carlos Alcaraz and Jakub Mensik triumphing in the doubles, clinching an incredibly hard-fought 7-6(7), 6-4 victory over American duo Taylor Fritz and Alex Michelsen. As a result, Team Europe currently hold a 3-1 lead over Team World.
07:50 CET - Good morning and welcome back to the Tennis Tracker, and what a day we have in store!
Let's quickly bring you up to date with some early results this morning before we look ahead to the rest of the day. Iga Swiatek and Maya Joint both claimed emphatic victories over Barbora Krejcikova and Clara Tauson in Seoul, respectively, and as a result, go head-to-head in the semi-final later today, after the rain played havoc on Friday.
In Hangzhou, second seed Daniil Medvedev started his campaign with a win, while Learner Tien also booked his spot in the quarter-finals.
So at the moment, Katerina Siniakova and Ekaterina Alexandrova are currently on court in the South Korean capital, while Lorenzo Musetti plays a little bit later in Chengdu.
The Laver Cup has got off to a brilliant start, with Team Europe holding a slight advantage. Carlos Alcaraz is playing right now alongside Jakub Mensik, facing Team World's Taylor Fritz and Alex Michelsen.
Meanwhile, after defending champions Italy booked their spots in a third consecutive Billie Jean King Cup final yesterday, Great Britain and the USA will battle it out to join them there.
Emma Navarro, Jessica Pegula, Katie Boulter and Sonay Kartal will all be representing their countries, with the Americans big favourites against the British underdogs. Play begins at 11:00 CET.
What a day!