| Cassius vs Clive | 39–33 | 54.17% |
| Cassius vs Jin | 29–21 | 58.00% |
| Cassius vs King | 22–20 | 52.38% |
| Cassius vs Kazuya | 22–20 | 52.38% |
| Cassius vs Bryan | 19–18 | 51.35% |
| Cassius vs Hwoarang | 12–21 | 36.36% |
| Cassius vs Reina | 18–14 | 56.25% |
| Cassius vs Lili | 16–14 | 53.33% |
| Cassius vs Law | 15–14 | 51.72% |
| Cassius vs Dragunov | 17–9 | 65.38% |
| Cassius vs Heihachi | 17–9 | 65.38% |
| Cassius vs Paul | 8–16 | 33.33% |
| Cassius vs Jun | 9–14 | 39.13% |
| Cassius vs Azucena | 11–12 | 47.83% |
| Cassius vs Lars | 10–11 | 47.62% |
| Cassius vs Lee | 11–10 | 52.38% |
| Cassius vs Victor | 11–10 | 52.38% |
| Cassius vs Xiaoyu | 13–6 | 68.42% |
| Cassius vs Nina | 10–9 | 52.63% |
| Cassius vs Steve | 8–10 | 44.44% |
| Cassius vs Jack-8 | 12–6 | 66.67% |
| Cassius vs Asuka | 6–12 | 33.33% |
| Cassius vs Devil Jin | 11–5 | 68.75% |
| Cassius vs Raven | 12–4 | 75.00% |
| Cassius vs Lidia | 7–7 | 50.00% |
| Cassius vs Yoshimitsu | 7–5 | 58.33% |
| Cassius vs Feng | 6–5 | 54.55% |
| Cassius vs Claudio | 2–8 | 20.00% |
| Cassius vs Zafina | 8–2 | 80.00% |
| Cassius vs Leo | 5–4 | 55.56% |
| Cassius vs Eddy | 5–3 | 62.50% |
| Cassius vs Kuma | 4–2 | 66.67% |
| Cassius vs Leroy | 3–3 | 50.00% |
| Cassius vs Shaheen | 1–2 | 33.33% |
| Cassius vs Alisa | 2–0 | 100.00% |
| Cassius vs Panda | 1–1 | 50.00% |
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.