| Eikka vs Jin | 7–6 | 53.85% |
| Eikka vs Kazuya | 4–7 | 36.36% |
| Eikka vs Lili | 4–7 | 36.36% |
| Eikka vs Dragunov | 2–9 | 18.18% |
| Eikka vs Reina | 5–6 | 45.45% |
| Eikka vs Steve | 4–6 | 40.00% |
| Eikka vs Victor | 4–4 | 50.00% |
| Eikka vs King | 1–5 | 16.67% |
| Eikka vs Bryan | 3–3 | 50.00% |
| Eikka vs Asuka | 0–6 | 0.00% |
| Eikka vs Jun | 3–3 | 50.00% |
| Eikka vs Xiaoyu | 1–4 | 20.00% |
| Eikka vs Law | 2–1 | 66.67% |
| Eikka vs Hwoarang | 3–0 | 100.00% |
| Eikka vs Devil Jin | 1–2 | 33.33% |
| Eikka vs Lidia | 2–1 | 66.67% |
| Eikka vs Clive | 2–1 | 66.67% |
| Eikka vs Yoshimitsu | 0–2 | 0.00% |
| Eikka vs Alisa | 0–2 | 0.00% |
| Eikka vs Claudio | 0–2 | 0.00% |
| Eikka vs Shaheen | 2–0 | 100.00% |
| Eikka vs Raven | 0–2 | 0.00% |
| Eikka vs Heihachi | 0–2 | 0.00% |
| Eikka vs Paul | 0–1 | 0.00% |
| Eikka vs Leo | 1–0 | 100.00% |
| Eikka vs Panda | 0–1 | 0.00% |
| Eikka vs Zafina | 1–0 | 100.00% |
| Eikka vs Anna | 0–1 | 0.00% |
| Eikka vs Armor King | 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.