Paris - Amanda Anisimova, just 17, reached her first Grand Slam quarter-final at the French Open on Monday with a 6-3, 6-0 win over Spanish qualifier Aliona Bolsova.

Anisimova will be one of three American women in the quarter-finals where she will face defending champion Simona Halep.

The teenager fired 33 winners past her world 137-ranked opponent who was making her Roland Garros debut and is still completing her university studies in Barcelona.

Results from the ninth day of the French Open on Monday (x denotes seeding):

Men

4th round

Novak Djokovic (SRB x1) bt Jan-Lennard Struff (GER) 6-3, 6-2, 6-2

Alexander Zverev (GER x5) bt Fabio Fognini (ITA x9) 3-6, 6-2, 6-2, 7-6 (7/5)

Dominic Thiem (AUT x4) bt Gael Monfils (FRA x14) 6-4, 6-4, 6-2

Kei Nishikori (JPN x7) bt Benoît Paire (FRA) 6-2, 6-7 (8/10), 6-2, 6-7 (8/10), 7-5

Women

4th round

Madison Keys (USA x14) bt Katerina Siniakova (CZE) 6-2, 6-4

Ashleigh Barty (AUS x8) bt Sofia Kenin (USA) 6-3, 3-6, 6-0

Simona Halep (ROM x3) bt Iga Swiatek (POL) 6-1, 6-0