22:49 CET - Dominik Koepfer (30) is the final person through in the singles competition on Sunday after beating Milos Raonic (33) in a third-set tie-breaker after each set went to a tie-break 6-7, 7-6, 7-6.
22:24 CET - Our penultimate singles game of the day has come to an end with Alexei Popyrin (24) through to the next round after defeating Chilean flag-bearer Nicolas Jarry (28) 6-3, 7-6.
21:48 CET - Former Olympic Games quarter-finalist Caroline Wozniacki (34) has made her way into the second round, but needed a comeback against Egypt's Mayar Sherif (28) 2-6, 7-5, 6-1.
In the men's draw, it's been a good night for the Germans with both Maximilian Marterer (29) and Alex Zverev (27) into the next round.
21:22 CET - The Tsitsipas brothers of Greece have been knocked out of the doubles event in the first round after losing a match-breaker 12-10 to Portuguese pair Nuno Borges (27) and Francisco Cabral (27).
In the men's singles competition, Jakub Mensik (18) and Matteo Arnaldi (23) are both through to the second round.
21:15 CET - Another American tennis star Emma Navarro (23) has booked her place in the second round with a 6-2, 6-0 victory against Julia Grabher (28).
20:42 CET - Andy Murray (37) and Dan Evans (34) are through against Taro Daniel (31) and Kei Nishikori (34)! They seemed down and out when they were a set and a break down and then again when they had to save multiple match points in the deciding tie-break. They won 2-6, 7-6 (7-5), 11-9.
20:15 CET - After dazzling in the doubles yesterday, Coco Gauff (20) has begun her singles campaign with a dominant 6-3, 6-0 victory over Ajla Tomljanovic (31).
20:05 CET - Francisco Cerundolo (25) has continued the good day for Argentina in the men's Olympic tennis by defeating rival country Chile and Tomas Vera (26) 6-2, 6-1.
19:55 CET - Bulgaria's Viktoriya Tomova (29) has beaten Poland's Magdalena Frech (26) 6-4, 7-6 (7-4) to ease through.
19:13 CET - Another veteran of the sport is through to the next round as Stan Wawrinka (39) has seen off the threat of Pavel Kotov (25) with ease, winning their match 6-1, 6-1.
But, it's not to be for former French Open finalist Karolina Muchova (27), who has been beaten by Canada's Leylah Fernandez (21) in three sets 6-1, 4-6, 6-2.
18:43 CET - Elsewhere, Roman Safiullin (26) has stunned 15th seed Alejandro Tabilo (27) 6-4, 6-4 to progress.
18:40 CET - Mixed fortunes for host nation France as whilst entertainer Gael Monfils (37) crashes out against Italy's Lorenzo Musetti (22), Diane Parry (21) has secured her place in the next round.
18:04 CET - Elsewhere on the men's side, Tommy Paul (27) has secured his place in the next round with a 6-3, 6-4 win over Italy's Luciano Darderi (22)
18:00 CET - Rafael Nadal (38) may have dropped his level at times but he rolled back the years for the most part in a 6-1, 4-6, 6-4 victory over Hungary's Marton Fucsovics (32) to set up a blockbuster tie with old foe Novak Djokovic (37) in the second round!
17:20 CET - A short story of two Greek brothers. Stefanos Tsitsipas (25) is one of the world best players and despite a tough test in the way of Zizou Bergs (25), he came through 7-6 (8-6), 1-6, 6-1 to progress into the second round at the Olympics.
His brother Petros Tsitsipas (24) is not one of the world best players and his Olympic journey came to a swfit end at the hands of Dutch player Tallon Griekspoor (28), losing 6-2, 6-3.
16:40 CET - There would be no such upset for fifth seed Jessica Pegula (30) who stormed to a 6-3, 6-4 win over Switzerland's Viktorija Golubic (31).
16:36 CET - Colombia's Camila Osorio (22) has just caused one of the upsets of the Olympic tennis so far with a shock 6-4, 6-3 win over Jelena Ostapenko (27).
16:30 CET - Anna Schmiedlova (29) has come out on top against Britain's Katie Boulter (27) 6-4, 6-2 to progress. A poor showing from Boutler who is struggling for form after an underwhelming Wimbledon.
16:15 CET - Meanwhile, exciting Argentine talent Mariano Navone (23) made light work of an opponent in Nuno Borges (27) who on paper is of a similar ATP ranking and should have been a tough test. However a dominant 6-2, 6-2 victory secured his place in the second round.
16:13 CET - One man full of confidence right now is Jan-Lennard Struff (34) after his strong run in Switzerland last week and he looked on top form today at the Olympics. Germany's Struff defeated Portugal's Francisco Cabral (27) 6-2, 6-2 to progress.
15:29 CET - In her final Olympic Games with retirment on the horizon, Danielle Collins (30) is through to the next round after Laura Siegemund (36) retired in the second set with injury 6-3, 2-0 down.
15:16 CET - Wimbledon champion Barbora Krejcikova (28) recovered from a slow start to battle past Sara Sorribes Tormo (27) 4-6, 6-0, 7-6(2) in just under three hours.
Elsewhere, Qinwen Zheng (21), Jack Draper (22) and Sebastian Ofner (28) have all progressed.
15:02 CET - Casper Ruud (25) survived a tense first set to beat Japan's Taro Daniel (31) 7-5, 6-1, while Elina Svitolina (29) coasted past Moyuka Uchijima (22) for the loss of just three games.
14:33 CET - An all-South American duel has come to an end at Roland Garros where Tomas Martin Etcheverry (25) has seen off Brazilian Thomas Seyboth Wild (24) 7-6, 6-2.
Elsewhere, Danielle Collins (30) is through in the women's singles after her opponent Laura Siegemund (36) was forced to retire while trailing 3-6, 0-2.
14:03 CET - In-form duo Diana Shnaider (20) and Donna Vekic (28) are through to the second round after straight-set victories.
13:42 CET - Canadian Bianca Andreescu (24) has impressively swept aside Clara Tauson (21) 6-2, 6-3, while Chinese duo Xinyu Wang (22) and Xiyu Wang (23) have also booked their spots in the next round.
13:15 CET - Greece's Maria Sakkari (29) and Argentina's Maria Lourdes Carle (24) are the first women through today, easing past Danka Kovinic (29) and Tatjana Maria (36) respectively.
Meanwhile, in the men's event, Canada's Felix Auger-Aliassime (23) is safely into the next round after a convincing 6-1, 6-4 triumph over Marcos Giron (31).
13:00 CET - Play is well underway in the French capital, with as many as 56 singles matches to look forward to today!
You can check out the full men's schedule here and the women's schedule here.
09:26 CET - There's been some disappointing news this morning in Paris, as world number six Alex de Minaur (25) has been forced to withdraw from the men's singles due to a hip injury. The Australian will still play alongside Alexei Popyrin (24) in the doubles event.
09:21 CET - Before we look ahead to today's play, there was a big match overnight in Atlanta, with Japan's Yoshihito Nishioka (28) sealing his place in the final after a hard-fought 6-3, 4-6, 6-4 victory over Arthur Rinderknech (29).
08:30 CET - Good morning and welcome to our coverage of today's tennis action!
