Varatchaya Wongteanchai defeated Qiang Wang 7-6 2-6 6-4 in the Tokyo qualifying round 1 on hard. The upset overturned the form book — Qiang Wang came in leading the head-to-head 3–2, but Varatchaya Wongteanchai had been the form player, winning 4 of their last 8 on hard. Varatchaya Wongteanchai narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-04-29 | Gifu 50K | R32 | hard | Qiang Wang | 6-2 6-1 |
| 2012-08-27 | Tsukuba 25K | R16 | hard | Qiang Wang | 6-2 0-6 7-6(6) |
| 2012-03-19 | Phuket 25K | R32 | hard | Varatchaya Wongteanchai | 6-4 6-4 |
| 2011-06-13 | Balikpapan 25K | F | hard | Varatchaya Wongteanchai | 7-5 6-3 |
| 2009-05-25 | Gunma 25K | R32 | carpet | Qiang Wang | 7-6(3) 6-2 |
Averages over each player's completed matches in the selected window (47 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About