Kento Takeuchi defeated Hiromasa Oku 6-4 0-6 6-1 in the Vietnam F3 qualifying round on hard.
Takeuchi K. came through in three sets.
Kento Takeuchi beat Hiromasa Oku 6-4 0-6 6-1. Umpiry, "Kento Takeuchi vs Hiromasa Oku — Vietnam F3 Qualifying Round", https://umpiry.com/match/2012-04-16/oku-vs-takeuchi-vietnam-f3-qf?utm_source=cite (as of 16 April 2012).