21:40 CET - After winning the title in Rio last week, Sebastian Baez has continued his fantastic South American clay court form, battling past Francisco Comesan, 6-3, 5-7, 7-6(5), to move into the quarter-finals.
22:26 CET - Diana Shnaider has been dumped out of Austin, falling at the hands of Sorana Cirstea - who reached the quarter-finals in Dubai last week. The Romanian won 6-3, 2-6, 6-4, securing a spot in the last eight.
21:15 CET - Stefanos Tsitsipas has sealed a much-needed win in Dubai, beating Matteo Berrettini in a really hard-fought contest, 7-6(5), 1-6, 6-4 to move into the semi-finals.
20:54 CET - Damiz Dzumhur is into his first quarter-final since 2023, overcoming Mariano Navone, 6-4, 3-6, 6-3 in Santiago.
19:13 CET - Top seed Daniil Medvedev has been dumped out in Dubai, with Tallon Griekspoor saving four match points in the second set to defeat the Russian 2-6, 7-6(7), 7-5 in a thriller.
Griekspoor moves into the semi-finals where he'll face either Stefanos Tsitsipas or Matteo Berrettini.
Follow the final quarter-final in Dubai here.
15:56 CET - Quentin Halys is into the last four of an ATP 500 event for the very first time in his career after fighting from a set down to defeat Luca Nardi, 2-6, 6-3, 7-6(5). A milestone result for the Frenchman, as Felix Auger-Aliassime awaits in the semis.
13:42 CET - Felix Auger-Aliassime is through to his fourth semi-final of 2025 after seeing off the challenge of Marin Cilic in three sets, 6-4, 3-6, 6-2.
The Canadian will next face either Luca Nardi or Quentin Halys for a spot in the Dubai showpiece.
10:54 CET - Today's quarter-final action in Dubai is about to get underway as Felix Auger-Aliassime takes on experienced Croat Marin Cilic. You can follow that match here.
Later on, Stefanos Tsitsipas faces Matteo Berrettini in the headline game of the day, while top seed Daniil Medvedev comes up against Tallon Griekspoor.
Follow all the action in Dubai here.
08:28 CET - Over in Merida, second seed Paula Badosa sealed her spot in the quarter-finals after an emphatic 6-2, 6-1 triumph over Jaqueline Cristian in just 68 minutes.
Elsewhere, fifth seed Tomas Martin Etcheverry progressed in Santiago after a fairly routine 6-2, 6-4 win against Cristian Garin.
Check out the full schedules in Merida, Austin and Santiago via the links.
08:08 CET - There were plenty of shocks overnight in Acapulco, with top seed Alexander Zverev losing 3-6, 4-6 to American teenager Learner Tien.
David Goffin and Alejandro Davidovich Fokina also sprung surprises after victories over Ben Shelton and Frances Tiafoe respectively.
Meanwhile, Tommy Paul and Casper Ruud withdrew from their matches and Holger Rune was forced to retire just three games into his clash against Brandon Nakashima.
Check out the full schedule in Acapulco here.
07:45 CET - Good morning and welcome to our coverage of today's tennis!