| Kasai vs Heihachi | 16–5 | 76.19% |
| Kasai vs Kazuya | 9–2 | 81.82% |
| Kasai vs Asuka | 5–5 | 50.00% |
| Kasai vs King | 3–6 | 33.33% |
| Kasai vs Claudio | 5–3 | 62.50% |
| Kasai vs Reina | 4–4 | 50.00% |
| Kasai vs Jin | 5–2 | 71.43% |
| Kasai vs Jun | 5–2 | 71.43% |
| Kasai vs Victor | 4–3 | 57.14% |
| Kasai vs Paul | 1–5 | 16.67% |
| Kasai vs Yoshimitsu | 4–1 | 80.00% |
| Kasai vs Hwoarang | 2–3 | 40.00% |
| Kasai vs Bryan | 4–1 | 80.00% |
| Kasai vs Steve | 1–4 | 20.00% |
| Kasai vs Clive | 2–3 | 40.00% |
| Kasai vs Dragunov | 2–2 | 50.00% |
| Kasai vs Lili | 2–1 | 66.67% |
| Kasai vs Azucena | 2–1 | 66.67% |
| Kasai vs Lidia | 1–2 | 33.33% |
| Kasai vs Law | 0–2 | 0.00% |
| Kasai vs Xiaoyu | 0–2 | 0.00% |
| Kasai vs Anna | 0–2 | 0.00% |
| Kasai vs Devil Jin | 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.