Jae Sung An defeated Yuichi Ito 6-3 6-4 in the China F1 round of 16 on hard. The result followed the form book — Jae Sung An came in leading the head-to-head 1–0. Jae Sung An extended the head-to-head to 2–0.
An J. took it in straight sets.
Jae Sung An beat Yuichi Ito 6-3 6-4. Umpiry, "Jae Sung An vs Yuichi Ito — China F1 Round of 16", https://umpiry.com/match/2011-01-10/an-vs-ito-china-f1-r16?utm_source=cite (as of 10 January 2011).