| kei9 vs King | 14–17 | 45.16% |
| kei9 vs Asuka | 6–8 | 42.86% |
| kei9 vs Kazuya | 4–9 | 30.77% |
| kei9 vs Jin | 8–4 | 66.67% |
| kei9 vs Steve | 8–4 | 66.67% |
| kei9 vs Lili | 1–8 | 11.11% |
| kei9 vs Anna | 7–2 | 77.78% |
| kei9 vs Dragunov | 2–4 | 33.33% |
| kei9 vs Hwoarang | 2–3 | 40.00% |
| kei9 vs Victor | 3–2 | 60.00% |
| kei9 vs Raven | 1–4 | 20.00% |
| kei9 vs Yoshimitsu | 2–2 | 50.00% |
| kei9 vs Shaheen | 1–3 | 25.00% |
| kei9 vs Azucena | 2–2 | 50.00% |
| kei9 vs Devil Jin | 1–2 | 33.33% |
| kei9 vs Leroy | 1–2 | 33.33% |
| kei9 vs Jun | 1–2 | 33.33% |
| kei9 vs Lidia | 2–1 | 66.67% |
| kei9 vs Jack-8 | 0–2 | 0.00% |
| kei9 vs Feng | 0–2 | 0.00% |
| kei9 vs Leo | 0–2 | 0.00% |
| kei9 vs Alisa | 0–2 | 0.00% |
| kei9 vs Zafina | 0–2 | 0.00% |
| kei9 vs Reina | 2–0 | 100.00% |
| kei9 vs Heihachi | 0–2 | 0.00% |
| kei9 vs Law | 0–1 | 0.00% |
| kei9 vs Bryan | 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.