| 9Kayai vs Reina | 36–17 | 67.92% |
| 9Kayai vs Jin | 22–30 | 42.31% |
| 9Kayai vs Kazuya | 17–27 | 38.64% |
| 9Kayai vs King | 11–23 | 32.35% |
| 9Kayai vs Dragunov | 9–19 | 32.14% |
| 9Kayai vs Bryan | 17–7 | 70.83% |
| 9Kayai vs Victor | 10–12 | 45.45% |
| 9Kayai vs Hwoarang | 10–11 | 47.62% |
| 9Kayai vs Lars | 13–8 | 61.90% |
| 9Kayai vs Law | 13–7 | 65.00% |
| 9Kayai vs Lili | 12–6 | 66.67% |
| 9Kayai vs Jun | 7–10 | 41.18% |
| 9Kayai vs Steve | 8–8 | 50.00% |
| 9Kayai vs Alisa | 10–6 | 62.50% |
| 9Kayai vs Devil Jin | 6–9 | 40.00% |
| 9Kayai vs Azucena | 5–10 | 33.33% |
| 9Kayai vs Paul | 8–6 | 57.14% |
| 9Kayai vs Asuka | 7–6 | 53.85% |
| 9Kayai vs Claudio | 5–6 | 45.45% |
| 9Kayai vs Feng | 3–4 | 42.86% |
| 9Kayai vs Leroy | 5–2 | 71.43% |
| 9Kayai vs Eddy | 5–2 | 71.43% |
| 9Kayai vs Yoshimitsu | 3–3 | 50.00% |
| 9Kayai vs Jack-8 | 3–3 | 50.00% |
| 9Kayai vs Leo | 3–3 | 50.00% |
| 9Kayai vs Lee | 3–3 | 50.00% |
| 9Kayai vs Kuma | 2–4 | 33.33% |
| 9Kayai vs Raven | 2–3 | 40.00% |
| 9Kayai vs Lidia | 1–4 | 20.00% |
| 9Kayai vs Zafina | 1–2 | 33.33% |
| 9Kayai vs Xiaoyu | 0–2 | 0.00% |
| 9Kayai vs Heihachi | 2–0 | 100.00% |
| 9Kayai vs Panda | 0–1 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.