| Jeffer vs Kazuya | 35–78 | 30.97% |
| Jeffer vs Reina | 55–36 | 60.44% |
| Jeffer vs Jin | 32–53 | 37.65% |
| Jeffer vs Steve | 34–51 | 40.00% |
| Jeffer vs King | 31–51 | 37.80% |
| Jeffer vs Heihachi | 28–48 | 36.84% |
| Jeffer vs Bryan | 32–31 | 50.79% |
| Jeffer vs Dragunov | 13–41 | 24.07% |
| Jeffer vs Eddy | 21–26 | 44.68% |
| Jeffer vs Law | 18–28 | 39.13% |
| Jeffer vs Lili | 22–23 | 48.89% |
| Jeffer vs Hwoarang | 12–32 | 27.27% |
| Jeffer vs Yoshimitsu | 22–21 | 51.16% |
| Jeffer vs Nina | 14–29 | 32.56% |
| Jeffer vs Victor | 12–29 | 29.27% |
| Jeffer vs Paul | 12–26 | 31.58% |
| Jeffer vs Lidia | 14–23 | 37.84% |
| Jeffer vs Asuka | 4–28 | 12.50% |
| Jeffer vs Jack-8 | 16–15 | 51.61% |
| Jeffer vs Anna | 16–15 | 51.61% |
| Jeffer vs Xiaoyu | 8–22 | 26.67% |
| Jeffer vs Clive | 10–17 | 37.04% |
| Jeffer vs Jun | 12–11 | 52.17% |
| Jeffer vs Azucena | 9–14 | 39.13% |
| Jeffer vs Kuma | 7–15 | 31.82% |
| Jeffer vs Lars | 7–13 | 35.00% |
| Jeffer vs Alisa | 7–13 | 35.00% |
| Jeffer vs Zafina | 5–13 | 27.78% |
| Jeffer vs Lee | 3–13 | 18.75% |
| Jeffer vs Raven | 9–7 | 56.25% |
| Jeffer vs Devil Jin | 8–6 | 57.14% |
| Jeffer vs Feng | 2–11 | 15.38% |
| Jeffer vs Shaheen | 2–11 | 15.38% |
| Jeffer vs Fahkumram | 2–6 | 25.00% |
| Jeffer vs Leo | 1–6 | 14.29% |
| Jeffer vs Leroy | 0–7 | 0.00% |
| Jeffer vs Claudio | 4–2 | 66.67% |
| Jeffer vs Panda | 1–4 | 20.00% |
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.