| Yammer vs Reina | 18–25 | 41.86% |
| Yammer vs King | 4–23 | 14.81% |
| Yammer vs Lili | 13–14 | 48.15% |
| Yammer vs Yoshimitsu | 8–15 | 34.78% |
| Yammer vs Heihachi | 6–14 | 30.00% |
| Yammer vs Kazuya | 7–11 | 38.89% |
| Yammer vs Clive | 6–12 | 33.33% |
| Yammer vs Steve | 8–9 | 47.06% |
| Yammer vs Dragunov | 6–10 | 37.50% |
| Yammer vs Jin | 8–7 | 53.33% |
| Yammer vs Jun | 6–9 | 40.00% |
| Yammer vs Asuka | 6–6 | 50.00% |
| Yammer vs Azucena | 4–8 | 33.33% |
| Yammer vs Leo | 5–6 | 45.45% |
| Yammer vs Lidia | 5–6 | 45.45% |
| Yammer vs Paul | 4–6 | 40.00% |
| Yammer vs Hwoarang | 4–6 | 40.00% |
| Yammer vs Eddy | 2–7 | 22.22% |
| Yammer vs Law | 3–5 | 37.50% |
| Yammer vs Lars | 3–5 | 37.50% |
| Yammer vs Lee | 2–5 | 28.57% |
| Yammer vs Kuma | 1–6 | 14.29% |
| Yammer vs Victor | 4–3 | 57.14% |
| Yammer vs Alisa | 2–4 | 33.33% |
| Yammer vs Nina | 2–4 | 33.33% |
| Yammer vs Feng | 2–3 | 40.00% |
| Yammer vs Shaheen | 4–1 | 80.00% |
| Yammer vs Bryan | 0–3 | 0.00% |
| Yammer vs Claudio | 2–1 | 66.67% |
| Yammer vs Miary Zo | 2–1 | 66.67% |
| Yammer vs Xiaoyu | 0–2 | 0.00% |
| Yammer vs Zafina | 2–0 | 100.00% |
| Yammer vs Leroy | 0–2 | 0.00% |
| Yammer vs Devil Jin | 0–1 | 0.00% |
| Yammer vs Panda | 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.