Oh Hee Kwon defeated Takahiro Ittogi 6-0 6-7 6-2 in the Japan F7 round of 16 on carpet. The upset overturned the form book — Takahiro Ittogi came in leading the head-to-head 1–0. Oh Hee Kwon claimed a first win over Takahiro Ittogi in two meetings, levelling the head-to-head at 1–1.
Kwon O. came through in three sets.
Oh Hee Kwon beat Takahiro Ittogi 6-0 6-7(3) 6-2. Umpiry, "Oh Hee Kwon vs Takahiro Ittogi — Japan F7 Round of 16", https://umpiry.com/match/2010-06-21/ittogi-vs-kwon-japan-f7-r16?utm_source=cite (as of 21 June 2010).