| mammals vs Reina | 18–9 | 66.67% |
| mammals vs Hwoarang | 13–10 | 56.52% |
| mammals vs King | 10–12 | 45.45% |
| mammals vs Jun | 10–9 | 52.63% |
| mammals vs Asuka | 10–8 | 55.56% |
| mammals vs Jin | 6–9 | 40.00% |
| mammals vs Steve | 7–7 | 50.00% |
| mammals vs Azucena | 8–6 | 57.14% |
| mammals vs Lars | 8–5 | 61.54% |
| mammals vs Lee | 4–9 | 30.77% |
| mammals vs Law | 5–7 | 41.67% |
| mammals vs Dragunov | 3–9 | 25.00% |
| mammals vs Nina | 2–10 | 16.67% |
| mammals vs Lidia | 6–5 | 54.55% |
| mammals vs Paul | 4–4 | 50.00% |
| mammals vs Victor | 1–7 | 12.50% |
| mammals vs Eddy | 2–6 | 25.00% |
| mammals vs Yoshimitsu | 6–1 | 85.71% |
| mammals vs Bryan | 3–4 | 42.86% |
| mammals vs Leo | 3–4 | 42.86% |
| mammals vs Alisa | 5–2 | 71.43% |
| mammals vs Devil Jin | 0–6 | 0.00% |
| mammals vs Lili | 3–3 | 50.00% |
| mammals vs Claudio | 4–1 | 80.00% |
| mammals vs Leroy | 1–4 | 20.00% |
| mammals vs Kazuya | 1–3 | 25.00% |
| mammals vs Feng | 0–3 | 0.00% |
| mammals vs Kuma | 1–2 | 33.33% |
| mammals vs Panda | 2–0 | 100.00% |
| mammals vs Raven | 0–2 | 0.00% |
| mammals vs Xiaoyu | 1–0 | 100.00% |
| mammals vs Shaheen | 0–1 | 0.00% |
| mammals vs Zafina | 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.