| Jeph vs King | 13–18 | 41.94% |
| Jeph vs Kazuya | 14–15 | 48.28% |
| Jeph vs Steve | 16–12 | 57.14% |
| Jeph vs Asuka | 6–13 | 31.58% |
| Jeph vs Reina | 7–10 | 41.18% |
| Jeph vs Lili | 6–9 | 40.00% |
| Jeph vs Jin | 6–8 | 42.86% |
| Jeph vs Dragunov | 7–5 | 58.33% |
| Jeph vs Hwoarang | 3–8 | 27.27% |
| Jeph vs Bryan | 5–6 | 45.45% |
| Jeph vs Xiaoyu | 4–6 | 40.00% |
| Jeph vs Nina | 3–7 | 30.00% |
| Jeph vs Eddy | 3–7 | 30.00% |
| Jeph vs Law | 5–4 | 55.56% |
| Jeph vs Claudio | 4–4 | 50.00% |
| Jeph vs Lars | 3–4 | 42.86% |
| Jeph vs Kuma | 7–0 | 100.00% |
| Jeph vs Leroy | 5–2 | 71.43% |
| Jeph vs Paul | 0–6 | 0.00% |
| Jeph vs Yoshimitsu | 1–5 | 16.67% |
| Jeph vs Zafina | 0–6 | 0.00% |
| Jeph vs Devil Jin | 2–3 | 40.00% |
| Jeph vs Jun | 3–2 | 60.00% |
| Jeph vs Azucena | 2–3 | 40.00% |
| Jeph vs Feng | 3–0 | 100.00% |
| Jeph vs Leo | 0–3 | 0.00% |
| Jeph vs Raven | 1–2 | 33.33% |
| Jeph vs Alisa | 2–0 | 100.00% |
| Jeph vs Clive | 2–0 | 100.00% |
| Jeph vs Jack-8 | 0–1 | 0.00% |
| Jeph vs Victor | 0–1 | 0.00% |
| Jeph vs Heihachi | 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.