Story so far: Osaka, Thiem survive

World No.1 recovers from brink to beat Azarenka while Thiem pushed hard by Bublik.

Naomi Osaka©Philippe Montigny / FFT
 - rolandgarros.com

Dominic Thiem was pushed to the limit by a gallant Alexander Bublik before advancing to the third round.

In the first match of the day on Court Philippe-Chatrier, the No.4 seed trailed 5-2 in the fourth set - and faced two set points - before recovering to win 6-3, 6-7(6), 6-3, 7-5.

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Shortly after that, across on Court Suzanne-Lenglen, women's top seed Naomi Osaka staged a gritty comeback to subdue former world No.1 Victoria Azarenka.

Osaka trailed by a set and 4-2 yet hit her way out of trouble to record a 4-6, 7-5, 6-3 win, advancing to the third round in Paris for the third time in four years.

She will next play Katerina Siniakova, who upset 29th seed Maria Sakkari in three sets.

Also shown the exit was No.11 seed Aryna Sabalenka; for the second straight Slam, she fell to American teenager Amanda Anisimova in straight sets.

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In another upset, 17-year-old Polish rising star Iga Swiatek - playing in just her second-ever Grand Slam main draw - thumped China's Wang Qiang, the 16th seed.

Restoring order was eighth seed Ashleigh Barty, who reached the third round in Paris for the first time with a 7-5, 6-1 triumph over Danielle Collins on Court No.1.

Ashleigh Barty© Julien Crosnier / FFT

Shortly after Thiem progressed, 15th seed Belinda Bencic - a junior champion in 2013 at Roland-Garros - followed him onto Chatrier and completed her darkness-suspended match to defeat Laura Siegemund 4-6, 6-4, 6-4. She faces 23rd seed Donna Vekic for a place in the last 16.

Also advancing were Spanish qualifier Aliona Bolsova and Ekaterina Alexandrova, who ousted 2010 finalist Samantha Stosur in three sets.

In the men's draw, a left-knee injury put an end to No.28 seed Kyle Edmund's campaign; he was trailing Pablo Cuevas by two-sets-to-love when he stopped.

Cuevas next meets Thiem.

Argentine Leonardo Mayer completed a four-set upset win over compatriot Diego Schwartzman - the 17th seed who reached last year's quarter-finals - while Italian qualifier Salvatore Caruso stunned No.26 seed Gilles Simon of France in straight sets.