18:31 CET - In the final match of the day at the United Cup, Great Britain's double pairing of Olivia Nicholls and Neal Skupski have claimed a 6-2, 3-6, 10-4 victory over Greece's Despina Papamichail and Stefanos Sakellaridis, meaning the tie has ended 2-1 to the Greeks.
16:50 CET - Greece have taken a 2-0 lead in their United Cup clash against Great Britain after Maria Sakkari has overcome Emma Raducanu in a topsy-turvy affair.
The game lasted 147 minutes with Sakkari winning the tie 6-3, 3-6, 6-1.
14:00 CET - Stefanos Tsitsipas was given a real scare by Great Britain's Billy Harris, but eventually came out on top in a nail-biting contest, winning 4-6, 6-1, 7-4(4) to give Greece a 1-0 lead. Emma Raducanu will take on Maria Sakkari next.
Meanwhile, over in Brisbane, Magdalena Frech came out on top in a three-hour, 25-minute epic, beating former Wimbledon champion Marketa Vondrosuova 7-5, 6-7(3), 7-6(0).
13:35 CET - Yibing Wu has caused somewhat of an upset in Hong Kong after knocking out Fabian Marozsan 6-4, 6-2.
13:00 CET - Auckland wildcard Sloane Stephens is out after Mexican Renata Zarazua battled to a 7-5, 4-6, 6-2 victory.
11:56 CET - Iga Swiatek has come out on top in an absolute thriller against an inspired Eva Lys, winning a rollercoaster encounter 3-6, 6-3, 6-4 to give Poland an unassailable 2-0 lead against Germany at the United Cup.
11:18 CET - Top seed Daniil Medvedev has got his 2026 up and running with a comfortable 6-2, 6-3 victory over Marton Fucsovics in Brisbane.
On the women's side of the draw, Dayana Yastremska battled to a 7-6(3), 7-6(4) win over Australian wildcard Talia Gibson.
10:45 CET - On the WTA side of Brisbane, Anna Kalinskaya has booked her place in the next round, where Jessica Pegula awaits, after a dominant 6-4, 6-4 win against Tereza Valentova.
10:40 CET - Over in Hong Kong, Marin Cilic has made light work of Adrian Mannarino to win 6-3, 6-2 and progress.
10:25 CET - Home favourite Alexei Popyrin has been stunned in Brisbane after Quentin Halys produced a dominant display to win 5-7, 6-3, 6-4.
09:15 CET - Over in another United Cup clash and Poland are off to a flying start after Hubert Hurkacz made a blistering start to 2026 with a shock 6-3, 6-2 win against world number three Alexander Zverev.
09:12 CET - After Gauff's shock defeat earlier, Taylor Fritz has brought team USA back into it against Spain after coming through a battle against Jaume Munar to win 7-6 (4), 3-6, 7-6 (6).
09:10 CET - Over to Brisbane and Reilly Opelka has surged into the next round with a routine 6-3, 7-5 victory against home player Dane Sweeny.
07:00 CET - Hello, good morning and welcome to all things tennis this week!
Straight to the United Cup and the overnight result to bring you is exciting talent Jakub Mensik downed Casper Ruud 7-5, 7-6 (8-6) to secure Czechia's victory over Norway.
There are two other men's matches ongoing at the United Cup as Taylor Fritz looks to keep USA in their match against Spain as he takes on Jaume Munar. That comes after Coco Gauff was stunned earlier in the morning by Jessica Maneiro.
Meanwhile, it is Poland vs Germany as Alexander Zverev faces Hubert Hurkacz and that match is underway now.
The women's match between Poland and Germany sees world number two Iga Swiatek take on Eva Lys, with that match getting underway at 09:00 CET.
Follow all the WTA action from the United Cup here and ATP United Cup action here.
There is also action from the Brisbane Open and you can catch up with all the overnight results on the ATP side here and the WTA side here.
The big match from Brisbane this morning sees Daniil Medvedev start his 2026 with a tough test against Marton Fucsovics.
Finally, from the ATP tour, follow Marin Cilic's match in Hong Kong as he takes on Adrian Mannarino.
And lastly, on the WTA tour, there is action from the Auckland Open ongoing.
You can follow that here.