| Posey vs Steve | 8–4 | 66.67% |
| Posey vs Law | 6–5 | 54.55% |
| Posey vs Reina | 6–5 | 54.55% |
| Posey vs Azucena | 6–4 | 60.00% |
| Posey vs Victor | 5–5 | 50.00% |
| Posey vs Bryan | 6–2 | 75.00% |
| Posey vs Kazuya | 5–3 | 62.50% |
| Posey vs Devil Jin | 1–6 | 14.29% |
| Posey vs Lee | 6–1 | 85.71% |
| Posey vs Kuma | 1–6 | 14.29% |
| Posey vs Raven | 3–4 | 42.86% |
| Posey vs Eddy | 2–5 | 28.57% |
| Posey vs Yoshimitsu | 2–4 | 33.33% |
| Posey vs Jun | 3–3 | 50.00% |
| Posey vs Asuka | 3–2 | 60.00% |
| Posey vs Lili | 2–3 | 40.00% |
| Posey vs Leo | 4–1 | 80.00% |
| Posey vs Lars | 3–2 | 60.00% |
| Posey vs Nina | 2–3 | 40.00% |
| Posey vs Jin | 3–1 | 75.00% |
| Posey vs Lidia | 1–3 | 25.00% |
| Posey vs Paul | 2–1 | 66.67% |
| Posey vs King | 1–2 | 33.33% |
| Posey vs Xiaoyu | 3–0 | 100.00% |
| Posey vs Feng | 2–1 | 66.67% |
| Posey vs Dragunov | 3–0 | 100.00% |
| Posey vs Alisa | 1–2 | 33.33% |
| Posey vs Leroy | 3–0 | 100.00% |
| Posey vs Heihachi | 0–2 | 0.00% |
| Posey vs Hwoarang | 1–0 | 100.00% |
| Posey vs Claudio | 1–0 | 100.00% |
| Posey vs Zafina | 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.