| Assassin vs Eddy | 19–29 | 39.58% |
| Assassin vs Law | 12–16 | 42.86% |
| Assassin vs Jin | 13–13 | 50.00% |
| Assassin vs Reina | 15–11 | 57.69% |
| Assassin vs King | 9–16 | 36.00% |
| Assassin vs Steve | 8–15 | 34.78% |
| Assassin vs Lili | 11–9 | 55.00% |
| Assassin vs Paul | 9–8 | 52.94% |
| Assassin vs Hwoarang | 8–7 | 53.33% |
| Assassin vs Kazuya | 4–8 | 33.33% |
| Assassin vs Alisa | 4–7 | 36.36% |
| Assassin vs Asuka | 3–7 | 30.00% |
| Assassin vs Dragunov | 2–7 | 22.22% |
| Assassin vs Yoshimitsu | 6–2 | 75.00% |
| Assassin vs Claudio | 1–6 | 14.29% |
| Assassin vs Leroy | 5–2 | 71.43% |
| Assassin vs Victor | 2–4 | 33.33% |
| Assassin vs Devil Jin | 0–5 | 0.00% |
| Assassin vs Zafina | 4–1 | 80.00% |
| Assassin vs Jun | 3–2 | 60.00% |
| Assassin vs Azucena | 0–5 | 0.00% |
| Assassin vs Jack-8 | 2–2 | 50.00% |
| Assassin vs Feng | 0–4 | 0.00% |
| Assassin vs Leo | 1–3 | 25.00% |
| Assassin vs Lars | 1–3 | 25.00% |
| Assassin vs Nina | 2–2 | 50.00% |
| Assassin vs Bryan | 3–0 | 100.00% |
| Assassin vs Lee | 2–1 | 66.67% |
| Assassin vs Kuma | 0–3 | 0.00% |
| Assassin vs Xiaoyu | 0–2 | 0.00% |
| Assassin vs Panda | 2–0 | 100.00% |
| Assassin vs Raven | 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.