| Posada vs Reina | 46–24 | 65.71% |
| Posada vs Bryan | 25–14 | 64.10% |
| Posada vs Steve | 25–13 | 65.79% |
| Posada vs Hwoarang | 23–12 | 65.71% |
| Posada vs Kazuya | 22–12 | 64.71% |
| Posada vs King | 20–11 | 64.52% |
| Posada vs Lili | 24–7 | 77.42% |
| Posada vs Devil Jin | 18–10 | 64.29% |
| Posada vs Paul | 11–14 | 44.00% |
| Posada vs Jin | 13–12 | 52.00% |
| Posada vs Asuka | 14–10 | 58.33% |
| Posada vs Xiaoyu | 13–9 | 59.09% |
| Posada vs Lars | 12–10 | 54.55% |
| Posada vs Dragunov | 13–6 | 68.42% |
| Posada vs Eddy | 10–9 | 52.63% |
| Posada vs Raven | 9–9 | 50.00% |
| Posada vs Law | 5–11 | 31.25% |
| Posada vs Jun | 7–9 | 43.75% |
| Posada vs Azucena | 8–8 | 50.00% |
| Posada vs Jack-8 | 4–11 | 26.67% |
| Posada vs Victor | 10–4 | 71.43% |
| Posada vs Heihachi | 7–7 | 50.00% |
| Posada vs Yoshimitsu | 5–6 | 45.45% |
| Posada vs Feng | 9–2 | 81.82% |
| Posada vs Shaheen | 2–8 | 20.00% |
| Posada vs Lee | 7–3 | 70.00% |
| Posada vs Kuma | 8–1 | 88.89% |
| Posada vs Leroy | 4–5 | 44.44% |
| Posada vs Leo | 1–7 | 12.50% |
| Posada vs Claudio | 6–2 | 75.00% |
| Posada vs Nina | 6–1 | 85.71% |
| Posada vs Zafina | 3–4 | 42.86% |
| Posada vs Lidia | 2–4 | 33.33% |
| Posada vs Alisa | 2–1 | 66.67% |
| Posada vs Clive | 2–1 | 66.67% |
| Posada vs Panda | 2–0 | 100.00% |
| Posada vs Anna | 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.