| Ephox vs Jin | 10–4 | 71.43% |
| Ephox vs Reina | 10–4 | 71.43% |
| Ephox vs Law | 7–6 | 53.85% |
| Ephox vs King | 4–9 | 30.77% |
| Ephox vs Steve | 7–6 | 53.85% |
| Ephox vs Lili | 8–5 | 61.54% |
| Ephox vs Lidia | 4–9 | 30.77% |
| Ephox vs Eddy | 7–4 | 63.64% |
| Ephox vs Hwoarang | 4–5 | 44.44% |
| Ephox vs Victor | 6–3 | 66.67% |
| Ephox vs Leo | 6–2 | 75.00% |
| Ephox vs Lars | 5–3 | 62.50% |
| Ephox vs Paul | 2–5 | 28.57% |
| Ephox vs Kazuya | 2–5 | 28.57% |
| Ephox vs Dragunov | 3–4 | 42.86% |
| Ephox vs Jun | 6–1 | 85.71% |
| Ephox vs Yoshimitsu | 3–3 | 50.00% |
| Ephox vs Azucena | 4–2 | 66.67% |
| Ephox vs Nina | 5–0 | 100.00% |
| Ephox vs Kuma | 3–1 | 75.00% |
| Ephox vs Devil Jin | 2–1 | 66.67% |
| Ephox vs Claudio | 1–2 | 33.33% |
| Ephox vs Lee | 2–1 | 66.67% |
| Ephox vs Xiaoyu | 2–0 | 100.00% |
| Ephox vs Bryan | 2–0 | 100.00% |
| Ephox vs Asuka | 2–0 | 100.00% |
| Ephox vs Alisa | 2–0 | 100.00% |
| Ephox vs Shaheen | 0–2 | 0.00% |
| Ephox vs Raven | 2–0 | 100.00% |
| Ephox vs Panda | 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.