| Yammy vs Kazuya | 7–24 | 22.58% |
| Yammy vs King | 12–11 | 52.17% |
| Yammy vs Dragunov | 7–10 | 41.18% |
| Yammy vs Eddy | 2–15 | 11.76% |
| Yammy vs Steve | 6–9 | 40.00% |
| Yammy vs Reina | 9–5 | 64.29% |
| Yammy vs Jin | 2–11 | 15.38% |
| Yammy vs Lee | 4–9 | 30.77% |
| Yammy vs Xiaoyu | 4–8 | 33.33% |
| Yammy vs Devil Jin | 2–10 | 16.67% |
| Yammy vs Bryan | 3–8 | 27.27% |
| Yammy vs Lili | 5–6 | 45.45% |
| Yammy vs Azucena | 3–8 | 27.27% |
| Yammy vs Law | 6–4 | 60.00% |
| Yammy vs Jun | 3–7 | 30.00% |
| Yammy vs Lars | 2–7 | 22.22% |
| Yammy vs Jack-8 | 2–5 | 28.57% |
| Yammy vs Victor | 2–5 | 28.57% |
| Yammy vs Raven | 3–4 | 42.86% |
| Yammy vs Yoshimitsu | 3–3 | 50.00% |
| Yammy vs Feng | 2–4 | 33.33% |
| Yammy vs Leroy | 2–3 | 40.00% |
| Yammy vs Paul | 0–4 | 0.00% |
| Yammy vs Hwoarang | 0–4 | 0.00% |
| Yammy vs Asuka | 1–3 | 25.00% |
| Yammy vs Alisa | 1–3 | 25.00% |
| Yammy vs Nina | 0–4 | 0.00% |
| Yammy vs Leo | 1–2 | 33.33% |
| Yammy vs Shaheen | 2–1 | 66.67% |
| Yammy vs Zafina | 1–2 | 33.33% |
| Yammy vs Claudio | 0–1 | 0.00% |
| Yammy vs Kuma | 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.