| Cassio Rivers vs King | 14–5 | 73.68% |
| Cassio Rivers vs Law | 11–5 | 68.75% |
| Cassio Rivers vs Lili | 11–5 | 68.75% |
| Cassio Rivers vs Jin | 8–5 | 61.54% |
| Cassio Rivers vs Bryan | 10–3 | 76.92% |
| Cassio Rivers vs Feng | 7–5 | 58.33% |
| Cassio Rivers vs Jun | 8–4 | 66.67% |
| Cassio Rivers vs Reina | 9–3 | 75.00% |
| Cassio Rivers vs Yoshimitsu | 6–5 | 54.55% |
| Cassio Rivers vs Kazuya | 5–4 | 55.56% |
| Cassio Rivers vs Steve | 5–4 | 55.56% |
| Cassio Rivers vs Leroy | 5–4 | 55.56% |
| Cassio Rivers vs Victor | 5–4 | 55.56% |
| Cassio Rivers vs Paul | 4–2 | 66.67% |
| Cassio Rivers vs Asuka | 3–3 | 50.00% |
| Cassio Rivers vs Dragunov | 2–4 | 33.33% |
| Cassio Rivers vs Nina | 4–2 | 66.67% |
| Cassio Rivers vs Kuma | 2–3 | 40.00% |
| Cassio Rivers vs Leo | 3–1 | 75.00% |
| Cassio Rivers vs Lars | 4–0 | 100.00% |
| Cassio Rivers vs Raven | 4–0 | 100.00% |
| Cassio Rivers vs Hwoarang | 0–3 | 0.00% |
| Cassio Rivers vs Alisa | 2–1 | 66.67% |
| Cassio Rivers vs Claudio | 2–1 | 66.67% |
| Cassio Rivers vs Lee | 1–2 | 33.33% |
| Cassio Rivers vs Azucena | 3–0 | 100.00% |
| Cassio Rivers vs Xiaoyu | 2–0 | 100.00% |
| Cassio Rivers vs Devil Jin | 0–2 | 0.00% |
| Cassio Rivers vs Zafina | 2–0 | 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.