Vishnu Vardhan defeated Krittin Koaykul 6-0 6-1 in the M15 Nakhon Si Thammarat 6 round of 16 on hard. The result followed the form book — Vishnu Vardhan came in ranked #1338, leading the head-to-head 1–0. Vishnu Vardhan extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-20 | M15 Nakhon Pathom 2 | Q32 | hard | Vishnu Vardhan | 6-2 3-6 13-11 |