Di Wu defeated Daniel Yoo 6-3 6-3 in the China F3 qualifying round on hard.
Wu D. took it in straight sets.
Di Wu beat Daniel Yoo 6-3 6-3. Umpiry, "Di Wu vs Daniel Yoo — China F3 Qualifying Round", https://umpiry.com/match/2010-04-05/wu-vs-yoo-china-f3-qf?utm_source=cite (as of 5 April 2010).