| Yama vs Eddy | 10–20 | 33.33% |
| Yama vs Reina | 8–11 | 42.11% |
| Yama vs Jin | 7–10 | 41.18% |
| Yama vs Steve | 10–7 | 58.82% |
| Yama vs Bryan | 7–6 | 53.85% |
| Yama vs Feng | 8–5 | 61.54% |
| Yama vs Law | 3–9 | 25.00% |
| Yama vs Lili | 5–6 | 45.45% |
| Yama vs Kazuya | 4–5 | 44.44% |
| Yama vs Leroy | 8–1 | 88.89% |
| Yama vs King | 1–7 | 12.50% |
| Yama vs Kuma | 0–8 | 0.00% |
| Yama vs Paul | 3–4 | 42.86% |
| Yama vs Hwoarang | 3–4 | 42.86% |
| Yama vs Jack-8 | 4–3 | 57.14% |
| Yama vs Azucena | 4–3 | 57.14% |
| Yama vs Lee | 2–4 | 33.33% |
| Yama vs Jun | 4–2 | 66.67% |
| Yama vs Dragunov | 2–3 | 40.00% |
| Yama vs Lars | 0–4 | 0.00% |
| Yama vs Victor | 0–4 | 0.00% |
| Yama vs Raven | 1–3 | 25.00% |
| Yama vs Xiaoyu | 1–2 | 33.33% |
| Yama vs Asuka | 2–1 | 66.67% |
| Yama vs Shaheen | 1–2 | 33.33% |
| Yama vs Zafina | 2–1 | 66.67% |
| Yama vs Yoshimitsu | 1–0 | 100.00% |
| Yama vs Devil Jin | 0–1 | 0.00% |
| Yama vs Leo | 0–1 | 0.00% |
| Yama vs Alisa | 1–0 | 100.00% |
| Yama vs Nina | 0–1 | 0.00% |
| Yama vs Panda | 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.