| Headninja vs Jin | 18–24 | 42.86% |
| Headninja vs Hwoarang | 19–20 | 48.72% |
| Headninja vs Dragunov | 16–23 | 41.03% |
| Headninja vs Kazuya | 19–20 | 48.72% |
| Headninja vs Reina | 23–11 | 67.65% |
| Headninja vs King | 21–12 | 63.64% |
| Headninja vs Eddy | 5–18 | 21.74% |
| Headninja vs Azucena | 14–7 | 66.67% |
| Headninja vs Paul | 8–12 | 40.00% |
| Headninja vs Law | 5–13 | 27.78% |
| Headninja vs Xiaoyu | 6–12 | 33.33% |
| Headninja vs Steve | 12–6 | 66.67% |
| Headninja vs Jun | 5–12 | 29.41% |
| Headninja vs Alisa | 2–13 | 13.33% |
| Headninja vs Asuka | 8–4 | 66.67% |
| Headninja vs Devil Jin | 5–6 | 45.45% |
| Headninja vs Lee | 2–9 | 18.18% |
| Headninja vs Victor | 5–5 | 50.00% |
| Headninja vs Bryan | 7–3 | 70.00% |
| Headninja vs Claudio | 3–7 | 30.00% |
| Headninja vs Yoshimitsu | 4–5 | 44.44% |
| Headninja vs Jack-8 | 2–7 | 22.22% |
| Headninja vs Raven | 2–6 | 25.00% |
| Headninja vs Feng | 1–6 | 14.29% |
| Headninja vs Nina | 4–2 | 66.67% |
| Headninja vs Lili | 5–1 | 83.33% |
| Headninja vs Kuma | 0–4 | 0.00% |
| Headninja vs Leo | 2–1 | 66.67% |
| Headninja vs Leroy | 1–2 | 33.33% |
| Headninja vs Shaheen | 0–2 | 0.00% |
| Headninja vs Zafina | 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.