| Zefra vs Reina | 33–45 | 42.31% |
| Zefra vs King | 34–28 | 54.84% |
| Zefra vs Kazuya | 33–25 | 56.90% |
| Zefra vs Steve | 22–32 | 40.74% |
| Zefra vs Jin | 24–27 | 47.06% |
| Zefra vs Lili | 21–29 | 42.00% |
| Zefra vs Hwoarang | 21–25 | 45.65% |
| Zefra vs Bryan | 19–23 | 45.24% |
| Zefra vs Dragunov | 19–23 | 45.24% |
| Zefra vs Law | 22–19 | 53.66% |
| Zefra vs Raven | 15–18 | 45.45% |
| Zefra vs Eddy | 13–20 | 39.39% |
| Zefra vs Feng | 18–14 | 56.25% |
| Zefra vs Yoshimitsu | 14–15 | 48.28% |
| Zefra vs Asuka | 11–18 | 37.93% |
| Zefra vs Paul | 13–15 | 46.43% |
| Zefra vs Leo | 13–11 | 54.17% |
| Zefra vs Xiaoyu | 12–10 | 54.55% |
| Zefra vs Lee | 12–9 | 57.14% |
| Zefra vs Leroy | 8–12 | 40.00% |
| Zefra vs Heihachi | 9–11 | 45.00% |
| Zefra vs Zafina | 5–14 | 26.32% |
| Zefra vs Jun | 9–10 | 47.37% |
| Zefra vs Victor | 10–9 | 52.63% |
| Zefra vs Devil Jin | 12–6 | 66.67% |
| Zefra vs Azucena | 9–8 | 52.94% |
| Zefra vs Nina | 4–12 | 25.00% |
| Zefra vs Alisa | 2–13 | 13.33% |
| Zefra vs Lars | 7–7 | 50.00% |
| Zefra vs Jack-8 | 5–7 | 41.67% |
| Zefra vs Claudio | 3–5 | 37.50% |
| Zefra vs Panda | 3–3 | 50.00% |
| Zefra vs Kuma | 4–1 | 80.00% |
| Zefra vs Lidia | 2–3 | 40.00% |
| Zefra vs Shaheen | 4–0 | 100.00% |
| Zefra vs Clive | 2–2 | 50.00% |
| Zefra vs Anna | 1–2 | 33.33% |
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.