| Sefton vs King | 38–28 | 57.58% |
| Sefton vs Jin | 21–36 | 36.84% |
| Sefton vs Dragunov | 33–24 | 57.89% |
| Sefton vs Steve | 28–21 | 57.14% |
| Sefton vs Hwoarang | 27–17 | 61.36% |
| Sefton vs Kazuya | 23–20 | 53.49% |
| Sefton vs Reina | 26–17 | 60.47% |
| Sefton vs Lee | 20–20 | 50.00% |
| Sefton vs Bryan | 17–17 | 50.00% |
| Sefton vs Law | 17–14 | 54.84% |
| Sefton vs Jun | 17–12 | 58.62% |
| Sefton vs Paul | 18–9 | 66.67% |
| Sefton vs Azucena | 11–14 | 44.00% |
| Sefton vs Lili | 11–13 | 45.83% |
| Sefton vs Eddy | 10–10 | 50.00% |
| Sefton vs Asuka | 8–11 | 42.11% |
| Sefton vs Leroy | 10–8 | 55.56% |
| Sefton vs Yoshimitsu | 11–6 | 64.71% |
| Sefton vs Jack-8 | 8–8 | 50.00% |
| Sefton vs Panda | 8–8 | 50.00% |
| Sefton vs Devil Jin | 7–7 | 50.00% |
| Sefton vs Nina | 8–6 | 57.14% |
| Sefton vs Victor | 5–9 | 35.71% |
| Sefton vs Leo | 8–5 | 61.54% |
| Sefton vs Armor King | 3–7 | 30.00% |
| Sefton vs Lars | 3–6 | 33.33% |
| Sefton vs Alisa | 4–4 | 50.00% |
| Sefton vs Kuma | 1–6 | 14.29% |
| Sefton vs Raven | 3–4 | 42.86% |
| Sefton vs Clive | 4–3 | 57.14% |
| Sefton vs Xiaoyu | 2–3 | 40.00% |
| Sefton vs Heihachi | 2–3 | 40.00% |
| Sefton vs Anna | 4–1 | 80.00% |
| Sefton vs Feng | 0–4 | 0.00% |
| Sefton vs Claudio | 3–1 | 75.00% |
| Sefton vs Fahkumram | 4–0 | 100.00% |
| Sefton vs Shaheen | 0–3 | 0.00% |
| Sefton vs Zafina | 2–1 | 66.67% |
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.