| Cassou vs Jin | 17–20 | 45.95% |
| Cassou vs Law | 22–11 | 66.67% |
| Cassou vs Reina | 17–14 | 54.84% |
| Cassou vs King | 13–15 | 46.43% |
| Cassou vs Steve | 20–6 | 76.92% |
| Cassou vs Yoshimitsu | 11–12 | 47.83% |
| Cassou vs Azucena | 11–12 | 47.83% |
| Cassou vs Bryan | 8–13 | 38.10% |
| Cassou vs Kazuya | 12–8 | 60.00% |
| Cassou vs Eddy | 9–11 | 45.00% |
| Cassou vs Dragunov | 7–12 | 36.84% |
| Cassou vs Hwoarang | 10–8 | 55.56% |
| Cassou vs Nina | 10–6 | 62.50% |
| Cassou vs Xiaoyu | 4–11 | 26.67% |
| Cassou vs Lili | 8–7 | 53.33% |
| Cassou vs Fahkumram | 6–9 | 40.00% |
| Cassou vs Paul | 4–10 | 28.57% |
| Cassou vs Devil Jin | 5–6 | 45.45% |
| Cassou vs Jun | 7–4 | 63.64% |
| Cassou vs Victor | 4–7 | 36.36% |
| Cassou vs Lee | 3–7 | 30.00% |
| Cassou vs Lidia | 5–3 | 62.50% |
| Cassou vs Armor King | 2–6 | 25.00% |
| Cassou vs Lars | 3–4 | 42.86% |
| Cassou vs Kuma | 3–4 | 42.86% |
| Cassou vs Asuka | 6–0 | 100.00% |
| Cassou vs Alisa | 5–1 | 83.33% |
| Cassou vs Leroy | 2–4 | 33.33% |
| Cassou vs Heihachi | 4–2 | 66.67% |
| Cassou vs Jack-8 | 2–3 | 40.00% |
| Cassou vs Raven | 2–2 | 50.00% |
| Cassou vs Feng | 1–2 | 33.33% |
| Cassou vs Leo | 1–2 | 33.33% |
| Cassou vs Clive | 2–1 | 66.67% |
| Cassou vs Claudio | 0–2 | 0.00% |
| Cassou vs Shaheen | 0–2 | 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.