San Diego Open: Keys advances to second round

American Madison Keys defeated Australian qualifier Ellen Perez 6-1, 6-4 to move into the second round of the San Diego Open at the Barnes Tennis Centre on Monday evening.

Keys, ranked No 18, will face the winner of the match between Canadian wildcard Leylah Fernandez and Russian Daria Kasatkina, the No 8 seed, next.

San Diego WTA 500, other first-round matches (Barnes Tennis Centre, hard, USD 757.900, most recent results first):

• Bianca Andreescu vs. Liudmila Samsonova
• Caroline Garcia vs. Danielle Collins
• Veronika Kudermetova vs. Sloane Stephens
• Karolina Pliskova vs. Caroline Dolehide
• Maria Sakkari vs. Donna Vekic
• Leylah Fernandez vs. Daria Kasatkina
• Robin Montgomery vs. Coco Gauff
• Elena Rybakina vs. Garbine Muguruza
• Coco Vandeweghe vs. Sofia Kenin
• Louisa Chirico vs. Alison Riske-Amritraj
• Martina Trevisan vs. Camila Osorio