| Seif vs King | 19–20 | 48.72% |
| Seif vs Jin | 21–17 | 55.26% |
| Seif vs Law | 13–22 | 37.14% |
| Seif vs Hwoarang | 12–13 | 48.00% |
| Seif vs Kazuya | 11–10 | 52.38% |
| Seif vs Steve | 10–7 | 58.82% |
| Seif vs Reina | 11–5 | 68.75% |
| Seif vs Miary Zo | 7–9 | 43.75% |
| Seif vs Bryan | 9–5 | 64.29% |
| Seif vs Jun | 8–6 | 57.14% |
| Seif vs Dragunov | 6–7 | 46.15% |
| Seif vs Heihachi | 2–10 | 16.67% |
| Seif vs Yoshimitsu | 2–9 | 18.18% |
| Seif vs Eddy | 5–6 | 45.45% |
| Seif vs Armor King | 7–4 | 63.64% |
| Seif vs Feng | 7–3 | 70.00% |
| Seif vs Devil Jin | 4–5 | 44.44% |
| Seif vs Lars | 7–2 | 77.78% |
| Seif vs Clive | 4–5 | 44.44% |
| Seif vs Fahkumram | 3–6 | 33.33% |
| Seif vs Nina | 4–4 | 50.00% |
| Seif vs Jack-8 | 4–3 | 57.14% |
| Seif vs Asuka | 3–4 | 42.86% |
| Seif vs Leroy | 4–3 | 57.14% |
| Seif vs Azucena | 3–2 | 60.00% |
| Seif vs Alisa | 2–2 | 50.00% |
| Seif vs Xiaoyu | 2–1 | 66.67% |
| Seif vs Shaheen | 3–0 | 100.00% |
| Seif vs Zafina | 1–2 | 33.33% |
| Seif vs Victor | 2–1 | 66.67% |
| Seif vs Raven | 2–1 | 66.67% |
| Seif vs Anna | 3–0 | 100.00% |
| Seif vs Paul | 2–0 | 100.00% |
| Seif vs Lili | 1–1 | 50.00% |
| Seif vs Leo | 0–2 | 0.00% |
| Seif vs Lidia | 2–0 | 100.00% |
| Seif vs Kuma | 1–0 | 100.00% |
| Seif vs Panda | 1–0 | 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.