Sung Hee Han defeated So Jung Kim 7-6 2-6 6-4 in the Changwon 25K round of 16 on hard. The upset overturned the form book — So Jung Kim came in leading the head-to-head 1–0. Sung Hee Han claimed a first win over So Jung Kim in two meetings, levelling the head-to-head at 1–1.
Han S. came through in three sets.
Sung Hee Han beat So Jung Kim 7-6(14) 2-6 6-4. Umpiry, "Sung Hee Han vs So Jung Kim — Changwon 25K Round of 16", https://umpiry.com/match/2011-05-23/han-vs-kim-changwon-25k-r16?utm_source=cite (as of 23 May 2011).