| amumu vs Heihachi | 19–9 | 67.86% |
| amumu vs King | 19–6 | 76.00% |
| amumu vs Hwoarang | 18–4 | 81.82% |
| amumu vs Reina | 14–7 | 66.67% |
| amumu vs Kazuya | 12–5 | 70.59% |
| amumu vs Lidia | 10–7 | 58.82% |
| amumu vs Jun | 8–7 | 53.33% |
| amumu vs Asuka | 8–6 | 57.14% |
| amumu vs Paul | 8–5 | 61.54% |
| amumu vs Lili | 10–3 | 76.92% |
| amumu vs Xiaoyu | 8–4 | 66.67% |
| amumu vs Nina | 8–4 | 66.67% |
| amumu vs Steve | 5–6 | 45.45% |
| amumu vs Dragunov | 8–1 | 88.89% |
| amumu vs Jin | 5–3 | 62.50% |
| amumu vs Devil Jin | 6–2 | 75.00% |
| amumu vs Law | 3–4 | 42.86% |
| amumu vs Bryan | 4–3 | 57.14% |
| amumu vs Feng | 3–4 | 42.86% |
| amumu vs Lee | 5–2 | 71.43% |
| amumu vs Azucena | 7–0 | 100.00% |
| amumu vs Eddy | 5–2 | 71.43% |
| amumu vs Claudio | 3–3 | 50.00% |
| amumu vs Victor | 2–4 | 33.33% |
| amumu vs Shaheen | 2–3 | 40.00% |
| amumu vs Lars | 2–2 | 50.00% |
| amumu vs Alisa | 2–2 | 50.00% |
| amumu vs Raven | 4–0 | 100.00% |
| amumu vs Yoshimitsu | 3–0 | 100.00% |
| amumu vs Leroy | 1–2 | 33.33% |
| amumu vs Jack-8 | 2–0 | 100.00% |
| amumu vs Kuma | 1–1 | 50.00% |
| amumu vs Leo | 1–0 | 100.00% |
| amumu vs Zafina | 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.