| Zefatan vs Steve | 31–35 | 46.97% |
| Zefatan vs Kazuya | 31–33 | 48.44% |
| Zefatan vs Jin | 17–33 | 34.00% |
| Zefatan vs Hwoarang | 11–36 | 23.40% |
| Zefatan vs King | 9–31 | 22.50% |
| Zefatan vs Dragunov | 12–22 | 35.29% |
| Zefatan vs Bryan | 10–21 | 32.26% |
| Zefatan vs Reina | 16–14 | 53.33% |
| Zefatan vs Yoshimitsu | 11–18 | 37.93% |
| Zefatan vs Lili | 10–13 | 43.48% |
| Zefatan vs Clive | 9–14 | 39.13% |
| Zefatan vs Victor | 7–14 | 33.33% |
| Zefatan vs Paul | 4–14 | 22.22% |
| Zefatan vs Lars | 3–15 | 16.67% |
| Zefatan vs Lidia | 7–11 | 38.89% |
| Zefatan vs Heihachi | 9–9 | 50.00% |
| Zefatan vs Law | 8–9 | 47.06% |
| Zefatan vs Fahkumram | 10–7 | 58.82% |
| Zefatan vs Leo | 4–10 | 28.57% |
| Zefatan vs Anna | 6–8 | 42.86% |
| Zefatan vs Feng | 1–12 | 7.69% |
| Zefatan vs Jun | 6–5 | 54.55% |
| Zefatan vs Xiaoyu | 4–5 | 44.44% |
| Zefatan vs Devil Jin | 1–8 | 11.11% |
| Zefatan vs Alisa | 5–3 | 62.50% |
| Zefatan vs Jack-8 | 6–1 | 85.71% |
| Zefatan vs Asuka | 3–4 | 42.86% |
| Zefatan vs Claudio | 5–2 | 71.43% |
| Zefatan vs Nina | 1–5 | 16.67% |
| Zefatan vs Lee | 4–2 | 66.67% |
| Zefatan vs Kuma | 2–4 | 33.33% |
| Zefatan vs Eddy | 2–4 | 33.33% |
| Zefatan vs Azucena | 3–2 | 60.00% |
| Zefatan vs Zafina | 2–2 | 50.00% |
| Zefatan vs Leroy | 2–1 | 66.67% |
| Zefatan vs Armor King | 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.