| Sefko vs Jin | 70–63 | 52.63% |
| Sefko vs Kazuya | 75–49 | 60.48% |
| Sefko vs Bryan | 72–47 | 60.50% |
| Sefko vs King | 54–42 | 56.25% |
| Sefko vs Fahkumram | 42–40 | 51.22% |
| Sefko vs Paul | 47–26 | 64.38% |
| Sefko vs Steve | 26–40 | 39.39% |
| Sefko vs Dragunov | 35–30 | 53.85% |
| Sefko vs Lee | 32–31 | 50.79% |
| Sefko vs Reina | 39–24 | 61.90% |
| Sefko vs Hwoarang | 36–24 | 60.00% |
| Sefko vs Heihachi | 38–22 | 63.33% |
| Sefko vs Yoshimitsu | 30–26 | 53.57% |
| Sefko vs Devil Jin | 35–20 | 63.64% |
| Sefko vs Law | 25–25 | 50.00% |
| Sefko vs Azucena | 22–22 | 50.00% |
| Sefko vs Feng | 28–11 | 71.79% |
| Sefko vs Xiaoyu | 24–13 | 64.86% |
| Sefko vs Asuka | 25–12 | 67.57% |
| Sefko vs Lili | 16–21 | 43.24% |
| Sefko vs Nina | 9–27 | 25.00% |
| Sefko vs Jun | 23–13 | 63.89% |
| Sefko vs Lars | 18–16 | 52.94% |
| Sefko vs Anna | 19–14 | 57.58% |
| Sefko vs Alisa | 23–9 | 71.88% |
| Sefko vs Leo | 16–15 | 51.61% |
| Sefko vs Eddy | 13–17 | 43.33% |
| Sefko vs Clive | 17–12 | 58.62% |
| Sefko vs Victor | 8–19 | 29.63% |
| Sefko vs Jack-8 | 14–12 | 53.85% |
| Sefko vs Kuma | 9–15 | 37.50% |
| Sefko vs Claudio | 10–13 | 43.48% |
| Sefko vs Raven | 13–7 | 65.00% |
| Sefko vs Zafina | 7–12 | 36.84% |
| Sefko vs Lidia | 10–9 | 52.63% |
| Sefko vs Shaheen | 8–9 | 47.06% |
| Sefko vs Armor King | 5–3 | 62.50% |
| Sefko vs Miary Zo | 2–6 | 25.00% |
| Sefko vs Leroy | 2–5 | 28.57% |
| Sefko vs Panda | 3–0 | 100.00% |
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.