Chul Hee Lee defeated Jae Sung An 7-5 6-3 in the Korean Rep F1 round of 16 on hard. The upset overturned the form book — Jae Sung An came in leading the head-to-head 3–0. Chul Hee Lee claimed a first win over Jae Sung An in four meetings, narrowing the head-to-head to 3–1.
Lee C. took it in straight sets.
Hard: An J. leads 2–1 · Carpet: An J. leads 1–0
Chul Hee Lee beat Jae Sung An 7-5 6-3. Umpiry, "Chul Hee Lee vs Jae Sung An — Korean Rep F1 Round of 16", https://umpiry.com/match/2009-04-06/an-vs-lee-korean-rep-f1-r16?utm_source=cite (as of 6 April 2009).