| Nai99 vs Jin | 53–44 | 54.64% |
| Nai99 vs King | 35–41 | 46.05% |
| Nai99 vs Law | 20–40 | 33.33% |
| Nai99 vs Kazuya | 26–31 | 45.61% |
| Nai99 vs Armor King | 20–28 | 41.67% |
| Nai99 vs Steve | 16–30 | 34.78% |
| Nai99 vs Dragunov | 19–24 | 44.19% |
| Nai99 vs Heihachi | 16–25 | 39.02% |
| Nai99 vs Bryan | 10–30 | 25.00% |
| Nai99 vs Paul | 20–17 | 54.05% |
| Nai99 vs Hwoarang | 11–24 | 31.43% |
| Nai99 vs Nina | 13–15 | 46.43% |
| Nai99 vs Eddy | 13–14 | 48.15% |
| Nai99 vs Victor | 13–13 | 50.00% |
| Nai99 vs Reina | 11–13 | 45.83% |
| Nai99 vs Lili | 13–8 | 61.90% |
| Nai99 vs Clive | 10–11 | 47.62% |
| Nai99 vs Azucena | 5–15 | 25.00% |
| Nai99 vs Lars | 4–15 | 21.05% |
| Nai99 vs Fahkumram | 6–12 | 33.33% |
| Nai99 vs Lee | 4–11 | 26.67% |
| Nai99 vs Asuka | 6–8 | 42.86% |
| Nai99 vs Devil Jin | 3–11 | 21.43% |
| Nai99 vs Shaheen | 5–7 | 41.67% |
| Nai99 vs Jun | 5–7 | 41.67% |
| Nai99 vs Alisa | 4–7 | 36.36% |
| Nai99 vs Anna | 4–7 | 36.36% |
| Nai99 vs Xiaoyu | 3–7 | 30.00% |
| Nai99 vs Claudio | 3–7 | 30.00% |
| Nai99 vs Feng | 6–3 | 66.67% |
| Nai99 vs Kuma | 3–6 | 33.33% |
| Nai99 vs Leroy | 2–7 | 22.22% |
| Nai99 vs Lidia | 4–5 | 44.44% |
| Nai99 vs Yoshimitsu | 3–4 | 42.86% |
| Nai99 vs Panda | 2–3 | 40.00% |
| Nai99 vs Raven | 2–3 | 40.00% |
| Nai99 vs Jack-8 | 2–1 | 66.67% |
| Nai99 vs Leo | 3–0 | 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.