San Diego Open: Yastremska moves into second round

Ukrainian Dayana Yastremska, the No 5 seed, beat American Caroline Dolehide 6-4, 5-7, 6-1 to reach the second round of the San Diego Open at the Barnes Tennis Center on Tuesday.

Yastremska, ranked No 33, will play the winner of the match between Dane wildcard Caroline Wozniacki and Russian Anna Blinkova next.

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

• Caroline Wozniacki vs. Anna Blinkova
• Donna Vekic vs. Katherine Hui
• Leylah Fernandez vs. Tatjana Maria
• Taylah Preston vs. Magdalena Frech
• Mai Hontama vs. Katerina Siniakova: tuesday
• Marta Kostyuk (6) 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