Australian Open champion Sofia Kenin breezed into the fourth round at Roland Garros with victory over Irina Bara.
The American fourth seed, 21, won 12 games in a row to beat Romanian qualifier Bara 6-2 6-0 in Paris.
Kenin hit 32 winners and saved 10 break points as she set up a meeting with either France's Fiona Ferro or Patricia Maria Tig of Romania next.
However, eighth seed Aryna Sabalenka was beaten by Tunisia's Ons Jabeur in a fluctuating match.
Jabeur, seeded 30th, beat the Belarussian 7-6 (9-7) 2-6 6-3 to reach the fourth round for the first time.
She had triple set point at 6-5 in a scrappy first set but was broken, before storming back from a 5-1 deficit in the tie-break to take the opener in 57 minutes.
However, a refocused Sabalenka took the second in just 19 minutes to force a decider.
Sabalenka saved three match points but sent a forehand long to hand Jabeur victory.
The 26-year-old will next play either 2016 champion Garbine Muguruza or American Danielle Collins.