| Ekichi Oni vs Kazuya | 8–14 | 36.36% |
| Ekichi Oni vs Lidia | 12–10 | 54.55% |
| Ekichi Oni vs Jin | 7–10 | 41.18% |
| Ekichi Oni vs Bryan | 4–12 | 25.00% |
| Ekichi Oni vs Reina | 6–8 | 42.86% |
| Ekichi Oni vs Hwoarang | 5–8 | 38.46% |
| Ekichi Oni vs Steve | 4–9 | 30.77% |
| Ekichi Oni vs Victor | 5–8 | 38.46% |
| Ekichi Oni vs King | 4–8 | 33.33% |
| Ekichi Oni vs Jun | 3–8 | 27.27% |
| Ekichi Oni vs Eddy | 1–10 | 9.09% |
| Ekichi Oni vs Law | 0–10 | 0.00% |
| Ekichi Oni vs Devil Jin | 4–6 | 40.00% |
| Ekichi Oni vs Lee | 5–5 | 50.00% |
| Ekichi Oni vs Yoshimitsu | 2–7 | 22.22% |
| Ekichi Oni vs Xiaoyu | 2–5 | 28.57% |
| Ekichi Oni vs Leroy | 3–4 | 42.86% |
| Ekichi Oni vs Azucena | 3–4 | 42.86% |
| Ekichi Oni vs Paul | 1–4 | 20.00% |
| Ekichi Oni vs Lili | 3–2 | 60.00% |
| Ekichi Oni vs Asuka | 1–3 | 25.00% |
| Ekichi Oni vs Dragunov | 0–4 | 0.00% |
| Ekichi Oni vs Raven | 1–3 | 25.00% |
| Ekichi Oni vs Alisa | 1–3 | 25.00% |
| Ekichi Oni vs Panda | 2–1 | 66.67% |
| Ekichi Oni vs Jack-8 | 0–2 | 0.00% |
| Ekichi Oni vs Feng | 0–2 | 0.00% |
| Ekichi Oni vs Leo | 0–2 | 0.00% |
| Ekichi Oni vs Zafina | 2–0 | 100.00% |
| Ekichi Oni vs Lars | 0–1 | 0.00% |
| Ekichi Oni vs Claudio | 1–0 | 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.