Ya Hsuan Lee defeated Hua Chen Lee 6-4 6-3 in the Balikpapan 25K qualifying round of 16 on hard. The upset overturned the form book — Hua Chen Lee came in leading the head-to-head 2–1. That levelled the head-to-head at 2–2.
Hsuan Lee Y. took it in straight sets.
Ya Hsuan Lee beat Hua Chen Lee 6-4 6-3. Umpiry, "Ya Hsuan Lee vs Hua Chen Lee — Balikpapan 25K Qualifying Round of 16", https://umpiry.com/match/2013-05-13/lee-vs-lee-balikpapan-25k-q16?utm_source=cite (as of 13 May 2013).