| Eikichi vs Law | 8–8 | 50.00% |
| Eikichi vs Hwoarang | 10–4 | 71.43% |
| Eikichi vs King | 7–5 | 58.33% |
| Eikichi vs Jin | 7–5 | 58.33% |
| Eikichi vs Steve | 10–2 | 83.33% |
| Eikichi vs Clive | 9–1 | 90.00% |
| Eikichi vs Fahkumram | 9–1 | 90.00% |
| Eikichi vs Bryan | 4–4 | 50.00% |
| Eikichi vs Kazuya | 5–3 | 62.50% |
| Eikichi vs Reina | 5–3 | 62.50% |
| Eikichi vs Dragunov | 3–4 | 42.86% |
| Eikichi vs Asuka | 2–4 | 33.33% |
| Eikichi vs Claudio | 4–2 | 66.67% |
| Eikichi vs Victor | 3–3 | 50.00% |
| Eikichi vs Paul | 2–3 | 40.00% |
| Eikichi vs Devil Jin | 4–1 | 80.00% |
| Eikichi vs Feng | 3–2 | 60.00% |
| Eikichi vs Xiaoyu | 2–2 | 50.00% |
| Eikichi vs Lili | 0–4 | 0.00% |
| Eikichi vs Lee | 2–2 | 50.00% |
| Eikichi vs Jun | 1–2 | 33.33% |
| Eikichi vs Heihachi | 2–1 | 66.67% |
| Eikichi vs Jack-8 | 2–0 | 100.00% |
| Eikichi vs Leo | 2–0 | 100.00% |
| Eikichi vs Kuma | 2–0 | 100.00% |
| Eikichi vs Eddy | 1–1 | 50.00% |
| Eikichi vs Lidia | 2–0 | 100.00% |
| Eikichi vs Yoshimitsu | 0–1 | 0.00% |
| Eikichi vs Nina | 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.