| JeffyJeff vs Fahkumram | 17–10 | 62.96% |
| JeffyJeff vs Heihachi | 8–8 | 50.00% |
| JeffyJeff vs Jin | 10–5 | 66.67% |
| JeffyJeff vs Bryan | 8–7 | 53.33% |
| JeffyJeff vs Dragunov | 6–9 | 40.00% |
| JeffyJeff vs King | 9–5 | 64.29% |
| JeffyJeff vs Reina | 8–5 | 61.54% |
| JeffyJeff vs Kazuya | 6–6 | 50.00% |
| JeffyJeff vs Lars | 10–1 | 90.91% |
| JeffyJeff vs Lidia | 7–4 | 63.64% |
| JeffyJeff vs Steve | 6–4 | 60.00% |
| JeffyJeff vs Azucena | 3–7 | 30.00% |
| JeffyJeff vs Jack-8 | 7–2 | 77.78% |
| JeffyJeff vs Asuka | 6–3 | 66.67% |
| JeffyJeff vs Jun | 4–4 | 50.00% |
| JeffyJeff vs Law | 2–5 | 28.57% |
| JeffyJeff vs Paul | 2–4 | 33.33% |
| JeffyJeff vs Yoshimitsu | 4–2 | 66.67% |
| JeffyJeff vs Leroy | 3–3 | 50.00% |
| JeffyJeff vs Devil Jin | 4–1 | 80.00% |
| JeffyJeff vs Alisa | 2–3 | 40.00% |
| JeffyJeff vs Raven | 4–1 | 80.00% |
| JeffyJeff vs Eddy | 2–3 | 40.00% |
| JeffyJeff vs Nina | 2–2 | 50.00% |
| JeffyJeff vs Lee | 3–1 | 75.00% |
| JeffyJeff vs Xiaoyu | 1–2 | 33.33% |
| JeffyJeff vs Feng | 2–1 | 66.67% |
| JeffyJeff vs Claudio | 2–1 | 66.67% |
| JeffyJeff vs Clive | 1–2 | 33.33% |
| JeffyJeff vs Anna | 2–1 | 66.67% |
| JeffyJeff vs Armor King | 3–0 | 100.00% |
| JeffyJeff vs Hwoarang | 2–0 | 100.00% |
| JeffyJeff vs Lili | 2–0 | 100.00% |
| JeffyJeff vs Kuma | 1–1 | 50.00% |
| JeffyJeff vs Victor | 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.