23:54 CET - All over in Vienna for the day, where Alejandro Davidovich Fokina needed nearly three hours to see off American Jenson Brooksby.
The Spaniard came from a set down to win the contest 6-7(6), 6-4, 7-5. We will be back early tomorrow morning for another day on the court.
21:53 CET - Alex De Minaur is into the quarter-finals in Vienna after a straightforward 6-4, 6-4 win over home favourite Filip Misolic.
20:57 CET - Top seed in Basel, Taylor Fritz, has battled through to the next round after a really tight tussle with Shanghai champion Valentin Vacherot, eventually coming out on top 4-6, 7-6(4), 7-5.
20:11 CET - Unfortunately, Jakub Mensik has withdrawn from his match in Basel against Joao Fonseca with an injury, giving the Brazilian a walkover into the next round.
19:18 CET - World number two Jannik Sinner has made light work of Daniel Altmaier in their last 16 tie in Vienna, beating the German 6-0, 6-2.
19:03 CET - Tallon Griekspoor needed two tie-breaks to see off Brandon Nakashima in a tightly contested affair, with the Dutchman winning out 7-6(4), 7-6(2) to make it into the Vienna quarter-finals.
18:00 CET - Red-hot Daniil Medvedev has come through a battle to book his spot in the next round in Vienna after winning 6-4, 6-7 (7), 6-2 against Nuno Borges.
17:40 CET - Coming off the back of his title triumph in Brussels last week, Felix Auger-Aliassime has continued his fantastic recent form with a 6-2, 7-5 victory over fellow Canadian Gabriel Diallo, moving into the next round in Basel.
16:17 CET - Back to Vienna, where Corentin Moutet has had a relatively easy time of it, with a straight-set 6-3, 6-0 victory over Damir Dzumhur.
15:36 CET - Basel's fourth seed Casper Ruud is into the next round thanks to a comfortable 6-1, 7-6(3) win against Quentin Halys.
15:15 CET - Former Grand Slam finalist Matteo Berrettini is another Italian through in Vienna with a 7-6(5), 6-3 victory over Alexei Popyrin.
15:02 CET - Flavio Cobolli and Ugo Humbert have both claimed straight set wins to move through in Vienna and Basel, respectively.
13:50 CET - The first match in Basel has seen the first shock as Botic Van de Zandschulp has beaten Jiri Lehecka, who was the finalist in Brussels last week.
The experienced Dutchman won 6-2, 6-2 in just under an hour and a half to complete a dominant against-the-odds victory.
13:15 CET - Play is just getting underway for the day in Vienna, too, as Tomas Machac takes on Wimbledon quarter-finalist Flavio Cobolli.
There are some big names to come later with Daniil Medvedev, Jannik Sinner and finally Alex De Minaur all taking to the court.
Follow all the action from Vienna with Flashscore.
12:42 CET - With Jiri Lehecka a set down to Botic Van De Zandschulp in the opening game, it is a big day of action from Basel on the ATP tour.
Other big names in action in Basel include Casper Ruud, Felix Auger-Aliassime and Taylor Fritz, all before a battle between the future of tennis as Jakub Mensik takes on Joao Fonseca.
Follow all the action from Basel this afternoon.
11:45 CET - Karolina Muchova has overcome Maya Joint in a really entertaining encounter in Tokyo, with the Czech defeating the 19-year-old 6-3, 7-5 to book her spot in the quarter-finals.
10:10 CET - The final match of the day in Tokyo is a fascinating one as rising star Maya Joint takes on the experienced eighth seed Karolina Muchova and that clash is underway.
10:00 CET - A mammoth battle in Tokyo has come to an end, and the seventh seed Diana Shnaider is out! Despite forcing the match to a deciding set, it was her opponent Anna Kalinskaya who came out on top in the final set tiebreak to win 7-6(4), 4-6, 7-6(5).
07:40 CET - Good morning and welcome to today's coverage from around the world of tennis!
A couple of overnight results from Tokyo to bring you, as Linda Noskova continued her impressive end to 2025 after coming from a set down to secure a hard-fought 5-7, 6-3, 6-4 victory against McCartney Kessler and a spot in the quarter-finals.
Elsewhere this morning, another rising star, Canadian Victoria Mboko, thrashed Germany's Eva Lys 6-1, 6-1 to book her spot in the quarter-finals.
There is a match ongoing in Tokyo as the seventh seed Diana Shnaider takes on fellow-Russian Anna Kalinskaya.
Follow all the action in Tokyo this morning with Flashscore.