| Yamster vs King | 41–45 | 47.67% |
| Yamster vs Reina | 35–42 | 45.45% |
| Yamster vs Kazuya | 14–55 | 20.29% |
| Yamster vs Steve | 25–40 | 38.46% |
| Yamster vs Jin | 15–34 | 30.61% |
| Yamster vs Asuka | 18–28 | 39.13% |
| Yamster vs Hwoarang | 13–32 | 28.89% |
| Yamster vs Azucena | 18–26 | 40.91% |
| Yamster vs Law | 19–21 | 47.50% |
| Yamster vs Lidia | 19–19 | 50.00% |
| Yamster vs Eddy | 20–16 | 55.56% |
| Yamster vs Bryan | 12–23 | 34.29% |
| Yamster vs Yoshimitsu | 5–27 | 15.62% |
| Yamster vs Leroy | 16–16 | 50.00% |
| Yamster vs Xiaoyu | 16–15 | 51.61% |
| Yamster vs Jun | 15–16 | 48.39% |
| Yamster vs Jack-8 | 6–24 | 20.00% |
| Yamster vs Lili | 13–16 | 44.83% |
| Yamster vs Lars | 14–15 | 48.28% |
| Yamster vs Devil Jin | 13–15 | 46.43% |
| Yamster vs Alisa | 11–15 | 42.31% |
| Yamster vs Lee | 9–17 | 34.62% |
| Yamster vs Kuma | 10–16 | 38.46% |
| Yamster vs Victor | 21–5 | 80.77% |
| Yamster vs Nina | 6–15 | 28.57% |
| Yamster vs Dragunov | 3–15 | 16.67% |
| Yamster vs Claudio | 3–14 | 17.65% |
| Yamster vs Paul | 6–10 | 37.50% |
| Yamster vs Zafina | 4–7 | 36.36% |
| Yamster vs Raven | 4–6 | 40.00% |
| Yamster vs Leo | 5–3 | 62.50% |
| Yamster vs Feng | 3–3 | 50.00% |
| Yamster vs Heihachi | 3–3 | 50.00% |
| Yamster vs Shaheen | 1–4 | 20.00% |
| Yamster vs Panda | 0–2 | 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.