Ya Zhou defeated Asako Sato 7-6 6-2 in the Balikpapan 25K qualifying round of 16 on hard.
Zhou Y. took it in straight sets.
Ya Zhou beat Asako Sato 7-6(2) 6-2. Umpiry, "Ya Zhou vs Asako Sato — Balikpapan 25K Qualifying Round of 16", https://umpiry.com/match/2011-06-13/sato-vs-zhou-balikpapan-25k-q16?utm_source=cite (as of 13 June 2011).