That's it from yesterday's matches! Check out all of the upcoming matchups for later today.
04:35 CET - Washington's own Frances Tiafoe survives after beating Aleksandar Kovacevic 7-5, 3-6, 6-3.
The 27-year-old put on a show for his hometown while rocking the same colors as the local American football team, the Washington Commanders.
03:45 CET - Elena Rybakina defeats Victoria Mboko 6-3, 7-5 in her Washington debut.
The win marks Rybakina's 35th on the year as she advances to the quarter-finals.
02:55 CET - Back to the men's side, Flavio Cobolli defeats Yoshihito Nishioka 6-2, 7-6 after putting up 10 aces.
Meanwhile, in a battle of Spaniards, Alejandro Davidovich Fokina takes down Jaume Munar 6-4, 6-2. Fokina will take on Learner Tien in the next round.
02:15 CET - Another upset happened but over on the women's side with Maria Sakkari taking down world's 11th-ranked and No. 2 seed Emma Navarro 7-5, 7-6.
02:00 CET - 19-year-old Learner Tien upsets world's number 10 Andrey Rublev in straight sets 7-5, 6-2.
The win marks Tien's fourth top-10 victory of the year!
01:00 CET - Claura Tauson defeats Caroline Dolehide 3-6, 7-5, 6-4 in a battle that saw 20 double faults between both.
22:11 CET - Taylor Fritz has just made a real statement on home turf, with the top seed brushing Aleksandar Vukic aside in less than an hour, beating the Aussie 6-3, 6-2. The world number four faced just one break point.
22:00 CET - The seventh seed is through in Washington with world number 13 Alex De Minaur securing a 7-6, 6-2 win over Yunchaokete Bu of China.
Matteo Arnaldi is also into the next round thanks to a surprise 7-5, 7-5 victory over fellow Italian and 16th seed Lorenzo Sonego.
21:00 CET - Daniil Medvedev has claimed a hard-fought win in the American capital, battling back from a set down to beat big-serving home favourite Reilly Opelka 3-6, 7-5, 6-1 in two hours.
19:50 CET - 11th seed Jiri Lehecka has advanced in DC with a 6-4, 6-7, 6-3 win over Zachary Svajda, but 10th seed Alexei Popyrin has lost 7-5, 5-7, 6-3 to world number 243 Yibing Wu.
18:32 CET - Anna Kalinskaya looked in fine touch in Washington, crushing Magda Linette in an hour and a quarter, 6-4, 6-0.
18:09 CET - Fourth seed Xinyu Wang has been involved in a titanic battle with world number 838 Lucie Havlickova in Prague, eventually getting the better of her opponent 3-6, 7-5, 7-6(6) in two hours and 52 minutes, saving a match point in the process.
17:30 CET - Alexander Bublik has continued his fine recent form, getting up and running in Kitzbuhel with a 6-3, 6-4 win over Thiago Agustin Tirante. He is eyeing a second straight title after his triumph in Gstaad last week.
16:56 CET - Top seed and home favourite Linda Noskova is into the Prague quarter-finals, easing to a 6-2, 6-4 victory over Elisabetta Cocciaretto in a little under an hour and a half.
Alexander Shevchenko has also moved through in Kitzbuhel after a 7-5, 6-4 victory over Marton Fucsovics.
16:00 CET - Two more players have progressed into the Kitzbuhel quarter-finals, with Botic van de Zandschulp and Arthur Cazaux moving through with straight-set victories.
15:15 CET - Czech star Katerina Siniakova and Marie Bouzkova have both claimed straight-set wins on home soil in Prague, while Jan-Lennard Struff has upset fifth seed Pedro Martinez in Kitzbuhel, winning 6-2, 6-2.
14:10 CET - The second seed has been knocked out in Kitzbuhel with Sebastian Baez losing 5-7, 6-3, 7-5 to Yannick Hanfmann, but sixth seed Arthur Rinderknech has claimed a 6-7, 6-4, 6-4 win over Norbert Gombos to advance.
In Prague, American talent Ann Li has won 6-4, 6-3 against Leolia Jeanjean.
13:15 CET - The first match of the day has finished in Prague, and Jessika Ponchet knocked out home player Barbora Palicova in straight sets, winning 6-1, 7-5.
There was better news for the home crowd in the other early match though, as teenager Tereza Valentova stunned the second seed Rebecca Sramkova 7-6 (7-1), 7-5 to progress.
10:50 CET - Today's headline action comes at the ATP and WTA events in Washington after Venus Williams' stunning victory on her return to tennis in the early hours of the morning.
Headlining today's action in the capital is a fascinating clash between Naomi Osaka and Emma Raducanu from 16:00 CET as two former Grand Slam champions go head-to-head.
Elsewhere, Wimbledon semi-finalist Taylor Fritz takes centre stage at his home tournament, Venus Williams is back for her second-round match, and Daniil Medvedev takes on another home favourite in Reilly Opelka.
Elsewhere today, top seed and home favourite Linda Noskova is playing her second match of the week at the Prague Open, whilst there is also action to look forward to in Austria and Croatia.
Check out the full schedule for events in Washington (ATP), Washington (WTA), Prague, Kitzbuhel and Umag via the links.
7:30 CET - Hello and welcome back to a big day of hard court action from Washington and clay court action across Europe. There is also hard court action from the Prague Open to look forward to as a busy week of tennis continues.