| Eefru vs King | 8–27 | 22.86% |
| Eefru vs Hwoarang | 5–14 | 26.32% |
| Eefru vs Jin | 4–15 | 21.05% |
| Eefru vs Dragunov | 5–11 | 31.25% |
| Eefru vs Jun | 6–8 | 42.86% |
| Eefru vs Clive | 6–7 | 46.15% |
| Eefru vs Bryan | 6–5 | 54.55% |
| Eefru vs Reina | 1–9 | 10.00% |
| Eefru vs Leroy | 2–7 | 22.22% |
| Eefru vs Law | 3–5 | 37.50% |
| Eefru vs Heihachi | 3–5 | 37.50% |
| Eefru vs Fahkumram | 2–6 | 25.00% |
| Eefru vs Yoshimitsu | 7–0 | 100.00% |
| Eefru vs Xiaoyu | 2–4 | 33.33% |
| Eefru vs Steve | 3–3 | 50.00% |
| Eefru vs Lee | 2–4 | 33.33% |
| Eefru vs Miary Zo | 2–4 | 33.33% |
| Eefru vs Asuka | 3–2 | 60.00% |
| Eefru vs Kazuya | 0–4 | 0.00% |
| Eefru vs Lili | 0–4 | 0.00% |
| Eefru vs Alisa | 0–4 | 0.00% |
| Eefru vs Kuma | 2–2 | 50.00% |
| Eefru vs Azucena | 2–2 | 50.00% |
| Eefru vs Victor | 2–2 | 50.00% |
| Eefru vs Lars | 0–3 | 0.00% |
| Eefru vs Shaheen | 1–2 | 33.33% |
| Eefru vs Zafina | 1–2 | 33.33% |
| Eefru vs Paul | 0–2 | 0.00% |
| Eefru vs Jack-8 | 2–0 | 100.00% |
| Eefru vs Devil Jin | 1–1 | 50.00% |
| Eefru vs Claudio | 1–1 | 50.00% |
| Eefru vs Raven | 0–2 | 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.