| Onyx vs King | 79–99 | 44.38% |
| Onyx vs Reina | 64–93 | 40.76% |
| Onyx vs Hwoarang | 60–76 | 44.12% |
| Onyx vs Jin | 54–78 | 40.91% |
| Onyx vs Kazuya | 55–76 | 41.98% |
| Onyx vs Eddy | 40–82 | 32.79% |
| Onyx vs Steve | 54–60 | 47.37% |
| Onyx vs Dragunov | 38–75 | 33.63% |
| Onyx vs Law | 46–62 | 42.59% |
| Onyx vs Bryan | 30–60 | 33.33% |
| Onyx vs Jun | 36–53 | 40.45% |
| Onyx vs Lidia | 30–59 | 33.71% |
| Onyx vs Yoshimitsu | 38–36 | 51.35% |
| Onyx vs Azucena | 32–42 | 43.24% |
| Onyx vs Victor | 27–44 | 38.03% |
| Onyx vs Lili | 29–40 | 42.03% |
| Onyx vs Paul | 27–41 | 39.71% |
| Onyx vs Asuka | 25–43 | 36.76% |
| Onyx vs Heihachi | 19–48 | 28.36% |
| Onyx vs Nina | 27–34 | 44.26% |
| Onyx vs Lee | 29–29 | 50.00% |
| Onyx vs Xiaoyu | 18–36 | 33.33% |
| Onyx vs Lars | 18–32 | 36.00% |
| Onyx vs Leo | 18–28 | 39.13% |
| Onyx vs Devil Jin | 21–24 | 46.67% |
| Onyx vs Leroy | 24–20 | 54.55% |
| Onyx vs Feng | 15–25 | 37.50% |
| Onyx vs Raven | 15–17 | 46.88% |
| Onyx vs Claudio | 13–15 | 46.43% |
| Onyx vs Alisa | 14–13 | 51.85% |
| Onyx vs Jack-8 | 6–19 | 24.00% |
| Onyx vs Kuma | 8–12 | 40.00% |
| Onyx vs Zafina | 6–14 | 30.00% |
| Onyx vs Shaheen | 7–11 | 38.89% |
| Onyx vs Panda | 5–6 | 45.45% |
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.