Czech second seed Karolina Pliskova came from a set down to avoid an upset against Egyptian qualifier Mayar Sherif in the French Open first round.
World number four Pliskova, 28, had eight set points in the opener, before losing to Sherif - ranked 172nd in the world - in a tie-break.
The 2017 semi-finalist wrapped up a quick second set against the 24-year-old after winning four games in a row.
Pliskova came through a tense decider to claim a 6-7 (9-11) 6-2 6-4 victory.
"It was super tough," she said. "Especially after losing the first set after having set points.