Oh Hee Kwon defeated Tetsuya Chaen 7-5 7-5 in the Japan F1 round of 16 on carpet. The result followed the form book — Oh Hee Kwon came in leading the head-to-head 3–0. Oh Hee Kwon extended the head-to-head to 4–0.
Kwon O. took it in straight sets.
Oh Hee Kwon beat Tetsuya Chaen 7-5 7-5. Umpiry, "Oh Hee Kwon vs Tetsuya Chaen — Japan F1 Round of 16", https://umpiry.com/match/2005-04-11/chaen-vs-kwon-japan-f1-r16?utm_source=cite (as of 11 April 2005).