| R9EF vs King | 13–6 | 68.42% |
| R9EF vs Claudio | 5–14 | 26.32% |
| R9EF vs Jin | 5–12 | 29.41% |
| R9EF vs Dragunov | 5–7 | 41.67% |
| R9EF vs Bryan | 1–9 | 10.00% |
| R9EF vs Reina | 3–7 | 30.00% |
| R9EF vs Law | 3–4 | 42.86% |
| R9EF vs Steve | 3–4 | 42.86% |
| R9EF vs Eddy | 3–3 | 50.00% |
| R9EF vs Clive | 1–5 | 16.67% |
| R9EF vs Armor King | 1–5 | 16.67% |
| R9EF vs Azucena | 2–3 | 40.00% |
| R9EF vs Kazuya | 1–3 | 25.00% |
| R9EF vs Asuka | 3–1 | 75.00% |
| R9EF vs Alisa | 2–2 | 50.00% |
| R9EF vs Anna | 0–4 | 0.00% |
| R9EF vs Paul | 1–2 | 33.33% |
| R9EF vs Devil Jin | 1–2 | 33.33% |
| R9EF vs Feng | 0–3 | 0.00% |
| R9EF vs Leo | 2–1 | 66.67% |
| R9EF vs Victor | 1–2 | 33.33% |
| R9EF vs Hwoarang | 2–0 | 100.00% |
| R9EF vs Xiaoyu | 2–0 | 100.00% |
| R9EF vs Lili | 0–2 | 0.00% |
| R9EF vs Lars | 0–2 | 0.00% |
| R9EF vs Nina | 0–2 | 0.00% |
| R9EF vs Heihachi | 1–1 | 50.00% |
| R9EF vs Zafina | 0–1 | 0.00% |
| R9EF vs Lidia | 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.