23:05 CET - Despite already securing the win in the tie, Greece have beaten Spain in the mixed doubles to end the day on a high.
21:12 CET - Another success for Spain in the Hopman Cup as Roberto Bautista-Agut has defeated Stefanos Tsitsipas 6-3, 6-7(6), 10-8.
20:21 CET - France have levelled their Hopman Cup tie against Croatia after Richard Gasquet recovered from a set down to beat Duje Ajdukovic 5-7, 6-2, 10-6.
Follow the decisive doubles rubber here.
19:49 CET - Home favourite Jerome Kym is the final winner of the day in Gstaad, with the 22-year-old battling past Francesco Passaro in two competitive sets, 7-6(3), 7-6(3).
19:18 CET - Spain have taken a 1-0 lead against Greece in their Hopman Cup tie after Marina Bassols defeated Despina Papamichail 6-0, 6-4 in the opening singles rubber.
Meanwhile, in Hamburg, top seed Ekaterina Alexandrova is safely through to the last eight after a convincing 6-2, 6-2 victory over Caroline Werner in just 68 minutes.
18:32 CET - Over to the Hopman Cup, and Donna Vekic has come out on top against Chloe Paquet 6-3, 6-3.
18:08 CET - The top seed in Bastad, Francisco Cerundolo, has won an all-Argentine affair 6-3, 6-3 against Mariano Navone to progress to the next round.
17:35 CET - Second seed in Gstaad, Alexander Bublik, has cruised into the quarter-finals courtesy of a 6-2, 6-3 victory over Alexander Shevchenko.
17:09 CET - Romania's Jaqueline Cristian is through on home soil after her opponent, Jana Fett, was forced to retire with an injury just five games into their second-round clash.
16:58 CET - Some big news away from today's on-court action, with three-time major finalist Ons Jabeur announcing on social media that she plans to take a break from competitive tennis.
"For the past two years, I've been pushing myself so hard, fighting through injuries and facing many other challenges. But deep down, I haven't truly felt happy on the court for some time now," she said in a statement.
"Tennis is such a beautiful sport. But right now, I feel it's time to take a step back and finally put myself first: to breathe, to heal, and to rediscover the joy of simply living."
16:17 CET - More shocks are rolling in, where in Bastad, third seed Nuno Borges has crashed out at the round of 16 stage. He has been defeated by Austria's Filip Misolic 3-6, 7-6(1), 6-3.
16:10 CET - A big upset in Gstaad, as fourth seed Tomas Martin Etcheverry has been dispatched, with Arthur Cazaux winning their encounter 6-3, 4-6, 6-4.
Elsewhere, home favourite Irina-Camelia Begu is through in Iasi, beating Victoria Jimenez Kasintseva 3-6, 6-3, 6-3.
15:43 CET - Hamburg's second seed, Dayana Yastremska, is through to the next round with a comprehensive 6-1, 6-4 victory over France's Diane Parry.
14:26 CET - Fifth seed Camilo Ugo Carabelli has progressed in Bastad, with the Argentine battling past Botic van de Zandschulp 7-6(3), 5-7, 6-3 in just under three hours.
Elsewhere, Anna Bondar and Simona Waltert have claimed wins in Hamburg and Iasi, respectively.
13:44 CET - Home favourite Sorana Cirstea is through in Iasi after a relatively comfortable 6-2, 6-4 triumph against Varvara Gracheva.
13:00 CET - In their first encounter, Juan Manuel Cerundolo has seen off Belgian veteran David Goffin in three sets 5-7, 6-4, 6-1.
12:29 CET - Viktoriya Tomova is safely through to the quarter-finals in Hamburg after an emphatic 6-1, 6-1 win over Astra Sharma.
11:55 CET - Staying in Iasi, the top seed of the tournament has been dumped out. Maria Lourdes Carle has shocked Armenia's Elina Avanesyan in straight sets 7-6(4), 6-2 in an attritional two hours and 17 minutes.
Meanwhile, over in Gstaad, seventh seed Francisco Comesana is through to the next round with a 6-1, 6-4 victory over Spaniard Roberto Carballes Baena.
11:12 CET - Panna Udvardy is the first winner of the day in Iasi, with the Hungarian claiming an impressive 6-4, 6-3 victory over eighth seed Francesca Jones in just 89 minutes.
09:08 CET - Before we look ahead to today's action in Bastad, Gstaad, Hamburg and Iasi, there were plenty of results overnight in Los Cabos, with top seed Andrey Rublev cruising past Alex Hernandez 6-3, 6-2 and Denis Shapovalov proving too strong for Govind Nanda, 6-1, 6-2.
Check out all the results in Los Cabos here.
08:30 CET - Good morning and welcome to our coverage of today's tennis!