00:20 CET - Frances Tiafoe (25) has won his second game of the day, this time defeating Jason Kubler (29) 6-2, 6-4.
23:32 CET - Play has been stopped for the day for Charleston due to rain but other tournaments are still bringing in results. In Houston, Tomas Machac (22) has beaten Marcos Giron (29) 6-4, 6-4 whilst Yannick Hanfmann (31) has upset the odds to see off world number 18 Tommy Paul (25) 7-6, 6-2.
Meanwhile, in Bogota, Francesca Jones' (22) great run has come to an end at the hands of Tatjana Maria (35), who won 6-3, 6-4.
Also, here is our WTA Flashmoment of the day from the game between Jones and Maria.
21:38 CET - Cristian Garin (26) needed two tie-breaks to see off Zizou Bergs (23) in his 7-6, 7-6 victory taking him through to the last eight in Houston. Tomas Martin Etcheverry (23) has also made his way through.
20:39 CET - Check out some more tennis goodness from the below match in our ATP Flashmoment of the day.
20:03 CET - As expected world number Casper Ruud (24) has made his way into the final in Estoril, but he was made to work by Quentin Halys (26). The Norwegian star won the first set 6-4, before Halys battled back to win the second 6-3 and take the third to a tie break. But Ruud was dominant in the decider, taking the breaker 7-2 and moving on to play Miomir Kecmanovic on Sunday.
19:53 CET - Frances Tiafoe (25), one of the main attractions this weekend in Texas, has strolled past fellow American Steve Johnson (33) 6-2, 6-4 in 75 minutes to make his way into the last eight. He will now take on Jason Kubler later on tonight.
19:35 CET - Jason Kubler (29) is the next player through in Houston after he saw off Daniel Elahi Galan (26) 6-4, 6-2 in one hour and 22 minutes.
19:20 CET - We have our final in Marrakech confirmed. Roberto Carballes Baena (30) will take on Alexandre Muller (26) after the Frenchman defeated Pavel Kotov (24) 7-5, 7-6.
Play has started early in Houston after yesterday's rain and there have been wins for JJ Wolf (24) and Gijs Brouwer (27), who will now meet later on in the day to see who will play in Sunday's semi-final.
18:11 CET - Miomir Kecmanovic (23) is through to the Estoril Open final with a 6-3, 6-1 victory over Marco Cecchinato (30) - he will now play either Casper Ruud or Quentin Halys tomorrow for the title.
16:52 CET - Our first result of the day comes from Marrakech, where Dan Evans (32) has been beaten by Roberto Carballes Baena (30) with the Spaniard reaching the final in Morocco thanks to a 2-6, 6-4, 6-2 scoreline.
15:30 CET - Pegula vs Bencic is the headline match of the day, which begins at 20:30 CET. In the other semi-final in Charleston, Ons Jabeur (28) faces Daria Kasatkina (25) at 19:00 CET.
Casper Ruud (24) is looking to reach the final in Estoril, with Quentin Halys (26) standing in his way. The match begins at 16:30 CET.
9:47 CET - There has been some talk about 'trash-talking' being introduced into tennis this week, but Daria Kasatkina (25) is completely against the idea.
Read about it here.
8:05 CET - As usual this morning, we have some results overnight, all coming from Charleston. Jessica Pegula (29) defeated Paula Badosa (25) 6-3 7-6(6), to set up a meeting with Belinda Bencic (26), who eased past Ekaterina Alexandrova (28) 6-3 6-3.
See highlights of Pegula's win below, as well as her interview after the match.