| Sejjoo vs Kazuya | 51–45 | 53.12% |
| Sejjoo vs King | 57–29 | 66.28% |
| Sejjoo vs Jin | 35–22 | 61.40% |
| Sejjoo vs Steve | 34–16 | 68.00% |
| Sejjoo vs Law | 25–19 | 56.82% |
| Sejjoo vs Bryan | 16–28 | 36.36% |
| Sejjoo vs Dragunov | 22–20 | 52.38% |
| Sejjoo vs Hwoarang | 26–9 | 74.29% |
| Sejjoo vs Reina | 21–14 | 60.00% |
| Sejjoo vs Paul | 16–16 | 50.00% |
| Sejjoo vs Heihachi | 16–16 | 50.00% |
| Sejjoo vs Clive | 24–5 | 82.76% |
| Sejjoo vs Yoshimitsu | 14–10 | 58.33% |
| Sejjoo vs Lidia | 11–11 | 50.00% |
| Sejjoo vs Lee | 12–8 | 60.00% |
| Sejjoo vs Nina | 10–7 | 58.82% |
| Sejjoo vs Lars | 5–9 | 35.71% |
| Sejjoo vs Azucena | 10–4 | 71.43% |
| Sejjoo vs Devil Jin | 4–9 | 30.77% |
| Sejjoo vs Asuka | 7–5 | 58.33% |
| Sejjoo vs Feng | 2–10 | 16.67% |
| Sejjoo vs Jun | 7–5 | 58.33% |
| Sejjoo vs Eddy | 6–6 | 50.00% |
| Sejjoo vs Alisa | 7–4 | 63.64% |
| Sejjoo vs Armor King | 4–7 | 36.36% |
| Sejjoo vs Claudio | 5–5 | 50.00% |
| Sejjoo vs Shaheen | 8–2 | 80.00% |
| Sejjoo vs Victor | 5–4 | 55.56% |
| Sejjoo vs Jack-8 | 5–3 | 62.50% |
| Sejjoo vs Leo | 6–2 | 75.00% |
| Sejjoo vs Kuma | 4–2 | 66.67% |
| Sejjoo vs Lili | 3–2 | 60.00% |
| Sejjoo vs Leroy | 4–1 | 80.00% |
| Sejjoo vs Xiaoyu | 2–2 | 50.00% |
| Sejjoo vs Panda | 0–4 | 0.00% |
| Sejjoo vs Raven | 2–2 | 50.00% |
| Sejjoo vs Anna | 2–2 | 50.00% |
| Sejjoo vs Fahkumram | 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.