Nan Nan Liu defeated Ying Yu 6-3 6-2 in the Tianjin 10K round of 16 on hard. The result followed the form book — Nan Nan Liu came in leading the head-to-head 1–0. Nan Nan Liu extended the head-to-head to 2–0.
Liu N. took it in straight sets.
Nan Nan Liu beat Ying Yu 6-3 6-2. Umpiry, "Nan Nan Liu vs Ying Yu — Tianjin 10K Round of 16", https://umpiry.com/match/2001-07-16/liu-vs-yu-tianjin-10k-r16?utm_source=cite (as of 16 July 2001).