| Ni66a vs Jin | 11–2 | 84.62% |
| Ni66a vs King | 8–3 | 72.73% |
| Ni66a vs Paul | 2–8 | 20.00% |
| Ni66a vs Feng | 4–5 | 44.44% |
| Ni66a vs Xiaoyu | 5–3 | 62.50% |
| Ni66a vs Bryan | 3–5 | 37.50% |
| Ni66a vs Leo | 4–4 | 50.00% |
| Ni66a vs Azucena | 8–0 | 100.00% |
| Ni66a vs Eddy | 6–2 | 75.00% |
| Ni66a vs Steve | 3–4 | 42.86% |
| Ni66a vs Raven | 3–4 | 42.86% |
| Ni66a vs Asuka | 3–3 | 50.00% |
| Ni66a vs Devil Jin | 3–3 | 50.00% |
| Ni66a vs Lars | 4–2 | 66.67% |
| Ni66a vs Nina | 2–4 | 33.33% |
| Ni66a vs Yoshimitsu | 2–3 | 40.00% |
| Ni66a vs Kazuya | 3–2 | 60.00% |
| Ni66a vs Shaheen | 4–1 | 80.00% |
| Ni66a vs Leroy | 2–3 | 40.00% |
| Ni66a vs Lee | 1–3 | 25.00% |
| Ni66a vs Victor | 4–0 | 100.00% |
| Ni66a vs Hwoarang | 3–0 | 100.00% |
| Ni66a vs Jack-8 | 1–2 | 33.33% |
| Ni66a vs Lili | 3–0 | 100.00% |
| Ni66a vs Jun | 1–2 | 33.33% |
| Ni66a vs Kuma | 2–0 | 100.00% |
| Ni66a vs Zafina | 1–1 | 50.00% |
| Ni66a vs Reina | 2–0 | 100.00% |
| Ni66a vs Claudio | 1–0 | 100.00% |
| Ni66a vs Panda | 0–1 | 0.00% |
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.