The Roland Garros No.15 seed managed to prevail in a gritty opening affair against Svetlana Kuznetsova. She posted a 6-4, 2-6, 6-3 score to move into the second round.
The No. 16 seed went from holding multiple match points and having a substantial lead to needing to retire at, 6-2, 6-4, 5-7, 0-3, due to a back injury against American Marcos Giron.
The Chilean celebrated his 25th birthday with a solid, 3-6, 6-4, 7-6(6), 6-2, first-round win over Juan Ignacio Londero.
It was far from a routine win for the Belarusian. She erased a 2-4 opening set deficit to post a 6-4, 6-3 score against Ana Konjuh in her opening match.
The Spaniard captured the upset of the day by edging past two-time Roland Garros finalist Dominic Thiem in five sets.