Another disappointing performance by Karolina Pliskova as she was stunned by world number 289 Anastasia Gasanova.
Maria Sakkari and Ons Jabeur both continued their form into 2021 to seal opening season wins.
A professional Novak Djokovic secured his place in the last four of the Nitto ATP Finals.
Alexander Zverev edged past Diego Schwartzman in a two hour roller-coaster battle at the O2 Arena.
The ATP Finals sees some intriguing matches as the season reaches its climax in London for the final time.
Bianca Andreescu will look to deal with the expectation of being a grand slam title when she returns in the new year.
Iga Swiatek will quarantine after being in close contact with the Polish President, who tested positive for COVID-19.
Julia Goerges announced her retirement from tennis after over two decades in the sport.
Rafael Nadal overcame Diego Schwartzman to reach his 13th Roland Garros final.
Stefanos Tsitsipas produced an impressive performance over Andrey Rublev to reach the last four in Paris.
Rafael Nadal survived a challenging test against Jannik Sinner to reach the final four in Paris.
Stefanos Tsitsipas made more history after beating Grigor Dimitrov at Roland Garros.
Rafael Nadal progressed into the last eight in Paris with a convincing win over Sebastian Korda.
Stefanos Tsitsipas will now play Grigor Dimitrov on Monday.
Rafael Nadal cruised past Stefano Travaglia as he makes the second week at Roland Garros without dropping a set.
Novak Djokovic won his 70th match at Roland Garros with a straight sets win over Ricardas Berankis.
Rafael Nadal and Dominic Thiem produced comfortable victories on day four of Roland Garros.
Kiki Bertens came through her match against Sara Errani but left the court on a wheelchair.
Sofia Kenin battles past Samsonova to reach the second round at Roland Garros.
Serena Williams had a tough test in her opening match at Roland Garros.