23:28 CET - Second seed Jannik Sinner (22) had made relatively light work of Frances Tiafoe (25) in the final quarter-final in Vienna, winning 6-3, 6-4.
Sinner will next play Andrey Rublev (26) in the semis.
22:00 CET - Our top moment of the day on the men’s circuit was a brilliantly fought rally between Hubert Hurkacz (26) and Tallon Griekspoor (27) in Basel.
The big Pole came out on top in this point and in the quarter-final.
21:48 CET - Top seed Holger Rune (20) has booked his spot in the semi-finals in Basel after beating Tomas Martin Etcheverry (24) 6-1, 3-6, 7-6(6).
21:35 CET - Third seed Andrey Rublev (26) has beaten Alexander Zverev (26) 6-1, 6-7(5), 6-3 to advance to the semi-finals in Vienna.
19:25 CET - The WTA FlashMoment of the day comes courtesy of Liudmilla Samosonova (24). She may have lost, but at least she went out in style!
18:50 CET - Stefanos Tsitsipas (25) has moved a step closer to the ATP Finals with a 7-6, 7-5 win over Borna Gojo (25) in Vienna.
In Switzerland meanwhile, home favourite Dominic Stricker (21) has been knocked out by Ugo Humbert (25), losing 6-4, 2-6, 6-2.
17:11 CET - The first ATP results of the day are in, with Hubert Hurkacz (26) winning 6-7, 6-4, 6-4 against Tallon Griekspoor (27) in Basel and Daniil Medvedev (27) beating compatriot Karen Khachanov (27) 6-3, 3-6, 6-3 in Vienna.
16:37 CET - A massive win for the young and upcoming Qinwen Zheng (18) in her home tournament against Jelena Ostapenko (26), with her topping her group and progressing to the semi-final in China. She won 6-4, 1-6, 6-2 in a high-quality match.
14:24 CET - Veronika Kudermetova (26) has won her final WTA Elite Trophy match of the year 6-4, 3-6, 7-5 against Liudmilla Samosonova (24). Both have finished below Lin Zhu (29) in their group.
11:55 CET - In the first match of the day in Zhuhai, Beatriz Haddad Maia (27) has won 6-1, 7-6 against Caroline Garcia (30) to move into the semi-finals of the WTA Elite Trophy.
07:30 CET - Hello and welcome to Flashscore's coverage of today's tennis. We'll be bringing you updates on all the matches taking place in Basel, Vienna and at the WTA Elite Trophy.