| Eikichi vs Reina | 11–11 | 50.00% |
| Eikichi vs Steve | 9–10 | 47.37% |
| Eikichi vs Hwoarang | 8–5 | 61.54% |
| Eikichi vs Lili | 9–3 | 75.00% |
| Eikichi vs Dragunov | 9–3 | 75.00% |
| Eikichi vs Jin | 5–6 | 45.45% |
| Eikichi vs Lars | 5–6 | 45.45% |
| Eikichi vs Alisa | 4–6 | 40.00% |
| Eikichi vs Heihachi | 6–4 | 60.00% |
| Eikichi vs King | 4–5 | 44.44% |
| Eikichi vs Paul | 5–3 | 62.50% |
| Eikichi vs Law | 1–6 | 14.29% |
| Eikichi vs Victor | 2–5 | 28.57% |
| Eikichi vs Nina | 2–4 | 33.33% |
| Eikichi vs Zafina | 2–4 | 33.33% |
| Eikichi vs Bryan | 1–4 | 20.00% |
| Eikichi vs Kazuya | 3–2 | 60.00% |
| Eikichi vs Jun | 4–1 | 80.00% |
| Eikichi vs Asuka | 1–3 | 25.00% |
| Eikichi vs Claudio | 0–4 | 0.00% |
| Eikichi vs Lidia | 3–1 | 75.00% |
| Eikichi vs Leroy | 3–0 | 100.00% |
| Eikichi vs Azucena | 0–3 | 0.00% |
| Eikichi vs Yoshimitsu | 1–1 | 50.00% |
| Eikichi vs Jack-8 | 2–0 | 100.00% |
| Eikichi vs Devil Jin | 2–0 | 100.00% |
| Eikichi vs Lee | 0–2 | 0.00% |
| Eikichi vs Raven | 1–1 | 50.00% |
| Eikichi vs Eddy | 1–1 | 50.00% |
| Eikichi vs Anna | 2–0 | 100.00% |
| Eikichi vs Xiaoyu | 1–0 | 100.00% |
| Eikichi vs Shaheen | 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.