| Kumay vs Kazuya | 39–25 | 60.94% |
| Kumay vs Bryan | 23–31 | 42.59% |
| Kumay vs Jin | 29–24 | 54.72% |
| Kumay vs Reina | 28–25 | 52.83% |
| Kumay vs King | 22–22 | 50.00% |
| Kumay vs Paul | 20–20 | 50.00% |
| Kumay vs Lee | 22–13 | 62.86% |
| Kumay vs Dragunov | 17–16 | 51.52% |
| Kumay vs Hwoarang | 12–19 | 38.71% |
| Kumay vs Steve | 14–16 | 46.67% |
| Kumay vs Yoshimitsu | 14–15 | 48.28% |
| Kumay vs Asuka | 16–13 | 55.17% |
| Kumay vs Jun | 13–12 | 52.00% |
| Kumay vs Lili | 13–10 | 56.52% |
| Kumay vs Law | 12–8 | 60.00% |
| Kumay vs Azucena | 13–7 | 65.00% |
| Kumay vs Lars | 8–11 | 42.11% |
| Kumay vs Leroy | 12–7 | 63.16% |
| Kumay vs Devil Jin | 9–9 | 50.00% |
| Kumay vs Alisa | 5–13 | 27.78% |
| Kumay vs Claudio | 8–10 | 44.44% |
| Kumay vs Heihachi | 7–10 | 41.18% |
| Kumay vs Feng | 7–9 | 43.75% |
| Kumay vs Raven | 7–9 | 43.75% |
| Kumay vs Eddy | 10–6 | 62.50% |
| Kumay vs Xiaoyu | 8–7 | 53.33% |
| Kumay vs Nina | 8–7 | 53.33% |
| Kumay vs Jack-8 | 7–6 | 53.85% |
| Kumay vs Victor | 8–5 | 61.54% |
| Kumay vs Lidia | 5–8 | 38.46% |
| Kumay vs Kuma | 10–2 | 83.33% |
| Kumay vs Leo | 3–8 | 27.27% |
| Kumay vs Shaheen | 5–1 | 83.33% |
| Kumay vs Panda | 3–2 | 60.00% |
| Kumay vs Zafina | 2–1 | 66.67% |
| Kumay vs Clive | 2–0 | 100.00% |
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.