A Ram Sim defeated Dabin Oh 6-3 6-1 in the Changwon 25K qualifying round of 64 on hard.
Ram Sim A. took it in straight sets.
A Ram Sim beat Dabin Oh 6-3 6-1. Umpiry, "A Ram Sim vs Dabin Oh — Changwon 25K Qualifying Round of 64", https://umpiry.com/match/2011-05-23/oh-vs-sim-changwon-25k-q64?utm_source=cite (as of 23 May 2011).