| KEFFY vs Dragunov | 9–6 | 60.00% |
| KEFFY vs Paul | 9–3 | 75.00% |
| KEFFY vs King | 8–4 | 66.67% |
| KEFFY vs Steve | 7–5 | 58.33% |
| KEFFY vs Jin | 7–4 | 63.64% |
| KEFFY vs Devil Jin | 8–3 | 72.73% |
| KEFFY vs Lili | 6–5 | 54.55% |
| KEFFY vs Asuka | 4–6 | 40.00% |
| KEFFY vs Bryan | 4–4 | 50.00% |
| KEFFY vs Kazuya | 7–1 | 87.50% |
| KEFFY vs Alisa | 3–5 | 37.50% |
| KEFFY vs Reina | 6–2 | 75.00% |
| KEFFY vs Law | 5–2 | 71.43% |
| KEFFY vs Jun | 3–4 | 42.86% |
| KEFFY vs Lidia | 6–0 | 100.00% |
| KEFFY vs Xiaoyu | 4–1 | 80.00% |
| KEFFY vs Feng | 3–1 | 75.00% |
| KEFFY vs Leo | 2–2 | 50.00% |
| KEFFY vs Raven | 2–2 | 50.00% |
| KEFFY vs Eddy | 2–2 | 50.00% |
| KEFFY vs Claudio | 3–0 | 100.00% |
| KEFFY vs Lee | 2–1 | 66.67% |
| KEFFY vs Victor | 1–2 | 33.33% |
| KEFFY vs Heihachi | 1–2 | 33.33% |
| KEFFY vs Lars | 0–2 | 0.00% |
| KEFFY vs Kuma | 0–2 | 0.00% |
| KEFFY vs Azucena | 2–0 | 100.00% |
| KEFFY vs Anna | 2–0 | 100.00% |
| KEFFY vs Jack-8 | 1–0 | 100.00% |
| KEFFY vs Panda | 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.