| Oni21 vs Kazuya | 11–12 | 47.83% |
| Oni21 vs King | 7–14 | 33.33% |
| Oni21 vs Jin | 12–7 | 63.16% |
| Oni21 vs Eddy | 8–10 | 44.44% |
| Oni21 vs Reina | 7–10 | 41.18% |
| Oni21 vs Hwoarang | 4–12 | 25.00% |
| Oni21 vs Bryan | 6–6 | 50.00% |
| Oni21 vs Paul | 5–6 | 45.45% |
| Oni21 vs Azucena | 3–8 | 27.27% |
| Oni21 vs Dragunov | 3–7 | 30.00% |
| Oni21 vs Jun | 3–6 | 33.33% |
| Oni21 vs Victor | 4–5 | 44.44% |
| Oni21 vs Law | 1–7 | 12.50% |
| Oni21 vs Yoshimitsu | 3–5 | 37.50% |
| Oni21 vs Asuka | 4–4 | 50.00% |
| Oni21 vs Nina | 1–7 | 12.50% |
| Oni21 vs Kuma | 2–5 | 28.57% |
| Oni21 vs Steve | 2–4 | 33.33% |
| Oni21 vs Lars | 4–2 | 66.67% |
| Oni21 vs Jack-8 | 1–4 | 20.00% |
| Oni21 vs Xiaoyu | 2–2 | 50.00% |
| Oni21 vs Feng | 2–2 | 50.00% |
| Oni21 vs Leroy | 1–3 | 25.00% |
| Oni21 vs Lili | 3–0 | 100.00% |
| Oni21 vs Leo | 0–3 | 0.00% |
| Oni21 vs Alisa | 1–2 | 33.33% |
| Oni21 vs Zafina | 2–1 | 66.67% |
| Oni21 vs Lee | 2–0 | 100.00% |
| Oni21 vs Raven | 0–2 | 0.00% |
| Oni21 vs Devil Jin | 0–1 | 0.00% |
| Oni21 vs Clive | 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.