Pro wins
Olympia titles
Shows entered
Years active
Direct Record Rena Ajima 0–3 Nittaya Kongthun · 3 shared shows
| Year | Competition | Division | Rena Ajima | Nittaya Kongthun | Winner | Source |
|---|---|---|---|---|---|---|
| 2026 | 2026 Hong Kong Pro | Bikini | 8 | 6 | Nittaya Kongthun | generationiron.com ↗ |
| 2026 | 2026 Asian Pro Championships | Bikini | 5 | 2 | Nittaya Kongthun | contests.npcnewsonline.com ↗ |
| 2026 | 2026 Huanji Harbin China Pro | Bikini | 5 | 2 | Nittaya Kongthun | generationiron.com ↗ |