Ryan Agar defeated Bowen Ouyang 6-4 6-4 in the China F4 round of 16 on hard.
Agar R. took it in straight sets.
Ryan Agar beat Bowen Ouyang 6-4 6-4. Umpiry, "Ryan Agar vs Bowen Ouyang — China F4 Round of 16", https://umpiry.com/match/2013-05-13/agar-vs-ouyang-china-f4-r16?utm_source=cite (as of 13 May 2013).