| Jefffffff vs Reina | 37–36 | 50.68% |
| Jefffffff vs Heihachi | 26–45 | 36.62% |
| Jefffffff vs Kazuya | 29–39 | 42.65% |
| Jefffffff vs King | 24–42 | 36.36% |
| Jefffffff vs Dragunov | 19–46 | 29.23% |
| Jefffffff vs Bryan | 19–43 | 30.65% |
| Jefffffff vs Jin | 18–28 | 39.13% |
| Jefffffff vs Steve | 19–23 | 45.24% |
| Jefffffff vs Victor | 14–22 | 38.89% |
| Jefffffff vs Lars | 13–21 | 38.24% |
| Jefffffff vs Hwoarang | 12–21 | 36.36% |
| Jefffffff vs Yoshimitsu | 7–25 | 21.88% |
| Jefffffff vs Law | 9–19 | 32.14% |
| Jefffffff vs Claudio | 11–14 | 44.00% |
| Jefffffff vs Lidia | 12–13 | 48.00% |
| Jefffffff vs Eddy | 7–14 | 33.33% |
| Jefffffff vs Paul | 3–17 | 15.00% |
| Jefffffff vs Devil Jin | 8–12 | 40.00% |
| Jefffffff vs Alisa | 7–13 | 35.00% |
| Jefffffff vs Lee | 10–10 | 50.00% |
| Jefffffff vs Azucena | 8–10 | 44.44% |
| Jefffffff vs Kuma | 7–10 | 41.18% |
| Jefffffff vs Asuka | 8–8 | 50.00% |
| Jefffffff vs Jack-8 | 4–8 | 33.33% |
| Jefffffff vs Jun | 3–9 | 25.00% |
| Jefffffff vs Xiaoyu | 4–7 | 36.36% |
| Jefffffff vs Lili | 2–9 | 18.18% |
| Jefffffff vs Clive | 3–8 | 27.27% |
| Jefffffff vs Raven | 2–8 | 20.00% |
| Jefffffff vs Leo | 4–5 | 44.44% |
| Jefffffff vs Shaheen | 1–6 | 14.29% |
| Jefffffff vs Leroy | 2–5 | 28.57% |
| Jefffffff vs Nina | 2–3 | 40.00% |
| Jefffffff vs Feng | 1–2 | 33.33% |
| Jefffffff vs Panda | 0–2 | 0.00% |
| Jefffffff vs Zafina | 0–1 | 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.