| Jaa9 vs King | 3–8 | 27.27% |
| Jaa9 vs Hwoarang | 2–5 | 28.57% |
| Jaa9 vs Lee | 4–3 | 57.14% |
| Jaa9 vs Bryan | 0–5 | 0.00% |
| Jaa9 vs Jack-8 | 1–4 | 20.00% |
| Jaa9 vs Jin | 1–3 | 25.00% |
| Jaa9 vs Kazuya | 0–4 | 0.00% |
| Jaa9 vs Steve | 1–3 | 25.00% |
| Jaa9 vs Lidia | 0–4 | 0.00% |
| Jaa9 vs Law | 0–3 | 0.00% |
| Jaa9 vs Leroy | 3–0 | 100.00% |
| Jaa9 vs Heihachi | 0–3 | 0.00% |
| Jaa9 vs Yoshimitsu | 1–1 | 50.00% |
| Jaa9 vs Dragunov | 0–2 | 0.00% |
| Jaa9 vs Reina | 0–2 | 0.00% |
| Jaa9 vs Raven | 0–2 | 0.00% |
| Jaa9 vs Devil Jin | 0–1 | 0.00% |
| Jaa9 vs Feng | 0–1 | 0.00% |
| Jaa9 vs Lili | 1–0 | 100.00% |
| Jaa9 vs Nina | 0–1 | 0.00% |
| Jaa9 vs Eddy | 0–1 | 0.00% |
| Jaa9 vs Victor | 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.