| Eiji vs Hwoarang | 0–12 | 0.00% |
| Eiji vs Dragunov | 1–9 | 10.00% |
| Eiji vs Asuka | 2–7 | 22.22% |
| Eiji vs Reina | 3–6 | 33.33% |
| Eiji vs Kazuya | 4–4 | 50.00% |
| Eiji vs Azucena | 2–6 | 25.00% |
| Eiji vs Eddy | 0–8 | 0.00% |
| Eiji vs Paul | 1–6 | 14.29% |
| Eiji vs Steve | 1–6 | 14.29% |
| Eiji vs Heihachi | 4–3 | 57.14% |
| Eiji vs Nina | 1–5 | 16.67% |
| Eiji vs Jin | 0–5 | 0.00% |
| Eiji vs Devil Jin | 0–5 | 0.00% |
| Eiji vs Victor | 0–5 | 0.00% |
| Eiji vs Bryan | 0–4 | 0.00% |
| Eiji vs Feng | 0–4 | 0.00% |
| Eiji vs Lili | 0–4 | 0.00% |
| Eiji vs Yoshimitsu | 1–2 | 33.33% |
| Eiji vs Leo | 1–2 | 33.33% |
| Eiji vs Lars | 0–3 | 0.00% |
| Eiji vs Claudio | 1–2 | 33.33% |
| Eiji vs Lidia | 0–3 | 0.00% |
| Eiji vs Law | 0–2 | 0.00% |
| Eiji vs King | 0–2 | 0.00% |
| Eiji vs Armor King | 1–1 | 50.00% |
| Eiji vs Miary Zo | 0–2 | 0.00% |
| Eiji vs Lee | 0–1 | 0.00% |
| Eiji vs Zafina | 1–0 | 100.00% |
| Eiji vs Jun | 1–0 | 100.00% |
| Eiji vs Clive | 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.