| Efinas vs Law | 19–4 | 82.61% |
| Efinas vs Paul | 12–2 | 85.71% |
| Efinas vs Armor King | 10–4 | 71.43% |
| Efinas vs Jin | 10–2 | 83.33% |
| Efinas vs Steve | 9–1 | 90.00% |
| Efinas vs Reina | 7–3 | 70.00% |
| Efinas vs Clive | 8–2 | 80.00% |
| Efinas vs Hwoarang | 8–1 | 88.89% |
| Efinas vs Lidia | 8–1 | 88.89% |
| Efinas vs Bryan | 7–1 | 87.50% |
| Efinas vs Lili | 6–2 | 75.00% |
| Efinas vs Dragunov | 4–3 | 57.14% |
| Efinas vs King | 4–2 | 66.67% |
| Efinas vs Kazuya | 6–0 | 100.00% |
| Efinas vs Lee | 3–3 | 50.00% |
| Efinas vs Yoshimitsu | 2–3 | 40.00% |
| Efinas vs Jun | 3–2 | 60.00% |
| Efinas vs Anna | 4–1 | 80.00% |
| Efinas vs Fahkumram | 1–4 | 20.00% |
| Efinas vs Claudio | 2–2 | 50.00% |
| Efinas vs Leroy | 2–2 | 50.00% |
| Efinas vs Heihachi | 2–2 | 50.00% |
| Efinas vs Feng | 2–1 | 66.67% |
| Efinas vs Lars | 2–1 | 66.67% |
| Efinas vs Alisa | 2–1 | 66.67% |
| Efinas vs Eddy | 3–0 | 100.00% |
| Efinas vs Miary Zo | 3–0 | 100.00% |
| Efinas vs Asuka | 2–0 | 100.00% |
| Efinas vs Devil Jin | 2–0 | 100.00% |
| Efinas vs Shaheen | 0–2 | 0.00% |
| Efinas vs Nina | 2–0 | 100.00% |
| Efinas vs Kuma | 1–0 | 100.00% |
| Efinas vs Victor | 0–1 | 0.00% |
| Efinas vs Raven | 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.