| Mammal vs King | 28–29 | 49.12% |
| Mammal vs Jin | 30–21 | 58.82% |
| Mammal vs Hwoarang | 26–20 | 56.52% |
| Mammal vs Kazuya | 27–18 | 60.00% |
| Mammal vs Law | 17–26 | 39.53% |
| Mammal vs Steve | 23–19 | 54.76% |
| Mammal vs Bryan | 17–20 | 45.95% |
| Mammal vs Azucena | 24–13 | 64.86% |
| Mammal vs Dragunov | 15–14 | 51.72% |
| Mammal vs Paul | 15–11 | 57.69% |
| Mammal vs Reina | 15–11 | 57.69% |
| Mammal vs Eddy | 8–18 | 30.77% |
| Mammal vs Victor | 14–11 | 56.00% |
| Mammal vs Yoshimitsu | 8–15 | 34.78% |
| Mammal vs Lili | 12–9 | 57.14% |
| Mammal vs Nina | 8–12 | 40.00% |
| Mammal vs Lee | 17–3 | 85.00% |
| Mammal vs Xiaoyu | 10–9 | 52.63% |
| Mammal vs Lars | 6–10 | 37.50% |
| Mammal vs Leo | 7–8 | 46.67% |
| Mammal vs Kuma | 6–8 | 42.86% |
| Mammal vs Alisa | 6–7 | 46.15% |
| Mammal vs Jun | 6–7 | 46.15% |
| Mammal vs Leroy | 6–5 | 54.55% |
| Mammal vs Zafina | 3–7 | 30.00% |
| Mammal vs Jack-8 | 5–4 | 55.56% |
| Mammal vs Asuka | 6–3 | 66.67% |
| Mammal vs Devil Jin | 4–5 | 44.44% |
| Mammal vs Lidia | 5–4 | 55.56% |
| Mammal vs Feng | 4–4 | 50.00% |
| Mammal vs Claudio | 5–3 | 62.50% |
| Mammal vs Shaheen | 3–4 | 42.86% |
| Mammal vs Raven | 5–2 | 71.43% |
| Mammal vs Heihachi | 2–5 | 28.57% |
| Mammal vs Panda | 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.