| Seikon vs Kazuya | 35–25 | 58.33% |
| Seikon vs King | 30–26 | 53.57% |
| Seikon vs Fahkumram | 20–29 | 40.82% |
| Seikon vs Jin | 22–18 | 55.00% |
| Seikon vs Reina | 25–15 | 62.50% |
| Seikon vs Steve | 19–19 | 50.00% |
| Seikon vs Dragunov | 19–12 | 61.29% |
| Seikon vs Bryan | 16–14 | 53.33% |
| Seikon vs Law | 16–13 | 55.17% |
| Seikon vs Yoshimitsu | 15–12 | 55.56% |
| Seikon vs Nina | 12–14 | 46.15% |
| Seikon vs Clive | 13–12 | 52.00% |
| Seikon vs Xiaoyu | 13–11 | 54.17% |
| Seikon vs Paul | 11–11 | 50.00% |
| Seikon vs Lee | 12–10 | 54.55% |
| Seikon vs Leroy | 14–8 | 63.64% |
| Seikon vs Jun | 12–10 | 54.55% |
| Seikon vs Hwoarang | 13–8 | 61.90% |
| Seikon vs Lili | 11–9 | 55.00% |
| Seikon vs Asuka | 12–7 | 63.16% |
| Seikon vs Heihachi | 14–5 | 73.68% |
| Seikon vs Azucena | 8–10 | 44.44% |
| Seikon vs Shaheen | 8–7 | 53.33% |
| Seikon vs Devil Jin | 12–1 | 92.31% |
| Seikon vs Claudio | 3–10 | 23.08% |
| Seikon vs Eddy | 8–5 | 61.54% |
| Seikon vs Lars | 8–4 | 66.67% |
| Seikon vs Victor | 8–4 | 66.67% |
| Seikon vs Raven | 2–10 | 16.67% |
| Seikon vs Anna | 7–5 | 58.33% |
| Seikon vs Feng | 6–5 | 54.55% |
| Seikon vs Lidia | 6–4 | 60.00% |
| Seikon vs Leo | 9–0 | 100.00% |
| Seikon vs Zafina | 2–7 | 22.22% |
| Seikon vs Jack-8 | 4–4 | 50.00% |
| Seikon vs Alisa | 3–5 | 37.50% |
| Seikon vs Kuma | 1–2 | 33.33% |
| Seikon vs Panda | 1–1 | 50.00% |
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.