San Diego Open: Preston outlasts Frech

Australian wildcard Taylah Preston advanced to the second round of the San Diego Open by defeating Pole Magdalena Frech 6-4, 4-6, 6-1 at the Barnes Tennis Center on Tuesday night.

Preston, ranked No 153, will face Ukrainian Marta Kostyuk, the No 6 seed, next.

San Diego WTA 500, other first-round results (Barnes Tennis Center, hard, USD 922.573, most recent results first):

• Caroline Wozniacki vs. Anna Blinkova
• Donna Vekic vs. Katherine Hui
• Tatjana Maria beat Leylah Fernandez (8): 6-7 (7), 4-0 ret.
• Katerina Siniakova beat Mai Hontama (Q): 6-3, 6-1
• Dayana Yastremska (5) beat Caroline Dolehide: 6-4, 5-7, 6-1
• Marta Kostyuk beat Ann Li (Q): 6-4, 4-6, 6-2
• Xinyu Wang beat Clara Tauson: 6-2, 2-6, 6-1
• Marina Stakusic (Q) beat Marina Melnikova (Q): 6-4, 5-7, 6-1
• Daria Saville (Q) beat Lin Zhu: 6-3, 6-3
• Jule Niemeier (Q) beat Varvara Gracheva: 6-3, 6-0
• Katie Boulter beat Lesia Tsurenko: 6-3, 6-1