| Onyxium vs Steve | 14–11 | 56.00% |
| Onyxium vs Reina | 16–8 | 66.67% |
| Onyxium vs King | 11–12 | 47.83% |
| Onyxium vs Kazuya | 14–6 | 70.00% |
| Onyxium vs Eddy | 7–13 | 35.00% |
| Onyxium vs Jin | 11–8 | 57.89% |
| Onyxium vs Law | 6–12 | 33.33% |
| Onyxium vs Lidia | 7–11 | 38.89% |
| Onyxium vs Bryan | 8–6 | 57.14% |
| Onyxium vs Raven | 8–5 | 61.54% |
| Onyxium vs Hwoarang | 8–4 | 66.67% |
| Onyxium vs Xiaoyu | 11–1 | 91.67% |
| Onyxium vs Feng | 3–8 | 27.27% |
| Onyxium vs Dragunov | 4–7 | 36.36% |
| Onyxium vs Yoshimitsu | 4–6 | 40.00% |
| Onyxium vs Nina | 4–6 | 40.00% |
| Onyxium vs Jun | 7–3 | 70.00% |
| Onyxium vs Fahkumram | 5–3 | 62.50% |
| Onyxium vs Lili | 4–3 | 57.14% |
| Onyxium vs Asuka | 2–4 | 33.33% |
| Onyxium vs Leo | 4–2 | 66.67% |
| Onyxium vs Lars | 3–3 | 50.00% |
| Onyxium vs Alisa | 0–6 | 0.00% |
| Onyxium vs Kuma | 1–5 | 16.67% |
| Onyxium vs Lee | 3–1 | 75.00% |
| Onyxium vs Leroy | 2–2 | 50.00% |
| Onyxium vs Victor | 2–2 | 50.00% |
| Onyxium vs Devil Jin | 2–1 | 66.67% |
| Onyxium vs Azucena | 3–0 | 100.00% |
| Onyxium vs Heihachi | 2–1 | 66.67% |
| Onyxium vs Clive | 2–1 | 66.67% |
| Onyxium vs Paul | 0–2 | 0.00% |
| Onyxium vs Panda | 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.