| Posy vs Kazuya | 15–14 | 51.72% |
| Posy vs Law | 10–9 | 52.63% |
| Posy vs Reina | 11–7 | 61.11% |
| Posy vs Raven | 11–7 | 61.11% |
| Posy vs Bryan | 12–5 | 70.59% |
| Posy vs Dragunov | 13–3 | 81.25% |
| Posy vs Steve | 7–8 | 46.67% |
| Posy vs Lili | 7–8 | 46.67% |
| Posy vs King | 8–6 | 57.14% |
| Posy vs Lee | 5–8 | 38.46% |
| Posy vs Paul | 5–7 | 41.67% |
| Posy vs Jin | 6–6 | 50.00% |
| Posy vs Heihachi | 3–9 | 25.00% |
| Posy vs Lars | 4–7 | 36.36% |
| Posy vs Azucena | 6–5 | 54.55% |
| Posy vs Jun | 5–5 | 50.00% |
| Posy vs Hwoarang | 6–3 | 66.67% |
| Posy vs Asuka | 5–3 | 62.50% |
| Posy vs Feng | 3–5 | 37.50% |
| Posy vs Leo | 4–3 | 57.14% |
| Posy vs Claudio | 4–3 | 57.14% |
| Posy vs Devil Jin | 3–3 | 50.00% |
| Posy vs Yoshimitsu | 4–1 | 80.00% |
| Posy vs Jack-8 | 2–3 | 40.00% |
| Posy vs Nina | 2–3 | 40.00% |
| Posy vs Leroy | 3–2 | 60.00% |
| Posy vs Alisa | 0–4 | 0.00% |
| Posy vs Victor | 0–4 | 0.00% |
| Posy vs Eddy | 4–0 | 100.00% |
| Posy vs Xiaoyu | 3–0 | 100.00% |
| Posy vs Shaheen | 3–0 | 100.00% |
| Posy vs Kuma | 2–1 | 66.67% |
| Posy vs Lidia | 1–2 | 33.33% |
| Posy vs Zafina | 2–0 | 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.