San Diego Open: Sabalenka through to quarter-finals

Belarusian Aryna Sabalenka, the No 3 seed, advanced to the quarter-finals of the San Diego Open by defeating American wildcard Sloane Stephens 1-6, 6-3, 6-2 at the Barnes Tennis Centre on Friday night.

Sabalenka, ranked No 5, will play Croat qualifier Donna Vekic next.

Stephens, ranked No 52, won against Swiss lucky loser Jil Teichmann (6-1, 7-6 (2)) in the previous round.

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

• Louisa Chirico vs. Paula Badosa : later today in San Diego
• Madison Keys beat Daria Kasatkina (8): 6-4, 6-3
• Coco Gauff (6) beat Bianca Andreescu: 6-4, 4-6, 6-3
• Iga Swiatek (1) beat Qinwen Zheng (LL): 6-4, 4-6, 6-1
• Jessica Pegula (4) beat Coco Vandeweghe (WC): 6-3, 6-1
• Danielle Collins beat Martina Trevisan: 6-2, 6-4
• Donna Vekic beat Karolina Pliskova: 6-3, 6-2