| Mayumi vs King | 8–17 | 32.00% |
| Mayumi vs Reina | 8–11 | 42.11% |
| Mayumi vs Hwoarang | 2–11 | 15.38% |
| Mayumi vs Jin | 7–6 | 53.85% |
| Mayumi vs Yoshimitsu | 3–9 | 25.00% |
| Mayumi vs Eddy | 1–9 | 10.00% |
| Mayumi vs Dragunov | 3–6 | 33.33% |
| Mayumi vs Clive | 6–3 | 66.67% |
| Mayumi vs Law | 0–8 | 0.00% |
| Mayumi vs Steve | 2–5 | 28.57% |
| Mayumi vs Lili | 0–7 | 0.00% |
| Mayumi vs Lars | 1–6 | 14.29% |
| Mayumi vs Nina | 3–4 | 42.86% |
| Mayumi vs Xiaoyu | 1–5 | 16.67% |
| Mayumi vs Bryan | 1–5 | 16.67% |
| Mayumi vs Asuka | 0–6 | 0.00% |
| Mayumi vs Paul | 0–5 | 0.00% |
| Mayumi vs Leo | 3–2 | 60.00% |
| Mayumi vs Kuma | 1–4 | 20.00% |
| Mayumi vs Zafina | 2–3 | 40.00% |
| Mayumi vs Victor | 1–4 | 20.00% |
| Mayumi vs Lidia | 1–4 | 20.00% |
| Mayumi vs Kazuya | 0–4 | 0.00% |
| Mayumi vs Feng | 0–4 | 0.00% |
| Mayumi vs Lee | 0–4 | 0.00% |
| Mayumi vs Leroy | 1–3 | 25.00% |
| Mayumi vs Jun | 0–4 | 0.00% |
| Mayumi vs Azucena | 2–2 | 50.00% |
| Mayumi vs Shaheen | 2–1 | 66.67% |
| Mayumi vs Jack-8 | 0–2 | 0.00% |
| Mayumi vs Claudio | 0–2 | 0.00% |
| Mayumi vs Raven | 0–2 | 0.00% |
| Mayumi vs Devil Jin | 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.