| Seff vs Steve | 39–24 | 61.90% |
| Seff vs Kazuya | 28–32 | 46.67% |
| Seff vs Hwoarang | 25–33 | 43.10% |
| Seff vs King | 28–27 | 50.91% |
| Seff vs Reina | 20–29 | 40.82% |
| Seff vs Jin | 22–25 | 46.81% |
| Seff vs Eddy | 15–27 | 35.71% |
| Seff vs Yoshimitsu | 14–20 | 41.18% |
| Seff vs Jun | 15–19 | 44.12% |
| Seff vs Bryan | 17–16 | 51.52% |
| Seff vs Dragunov | 15–18 | 45.45% |
| Seff vs Law | 12–18 | 40.00% |
| Seff vs Victor | 6–20 | 23.08% |
| Seff vs Lili | 17–8 | 68.00% |
| Seff vs Asuka | 5–16 | 23.81% |
| Seff vs Paul | 8–12 | 40.00% |
| Seff vs Devil Jin | 8–12 | 40.00% |
| Seff vs Raven | 8–12 | 40.00% |
| Seff vs Lee | 12–7 | 63.16% |
| Seff vs Alisa | 10–6 | 62.50% |
| Seff vs Azucena | 11–5 | 68.75% |
| Seff vs Nina | 5–9 | 35.71% |
| Seff vs Lars | 5–8 | 38.46% |
| Seff vs Xiaoyu | 3–9 | 25.00% |
| Seff vs Leroy | 3–9 | 25.00% |
| Seff vs Leo | 6–5 | 54.55% |
| Seff vs Claudio | 4–6 | 40.00% |
| Seff vs Feng | 6–3 | 66.67% |
| Seff vs Shaheen | 4–5 | 44.44% |
| Seff vs Lidia | 5–4 | 55.56% |
| Seff vs Jack-8 | 1–4 | 20.00% |
| Seff vs Kuma | 3–1 | 75.00% |
| Seff vs Panda | 1–3 | 25.00% |
| Seff vs Zafina | 4–0 | 100.00% |
| Seff vs Heihachi | 0–4 | 0.00% |
| Seff vs Anna | 1–2 | 33.33% |
| Seff vs Clive | 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.