| Seo Seung Doo vs Kazuya | 51–36 | 58.62% |
| Seo Seung Doo vs Bryan | 38–40 | 48.72% |
| Seo Seung Doo vs Steve | 46–28 | 62.16% |
| Seo Seung Doo vs Dragunov | 29–39 | 42.65% |
| Seo Seung Doo vs Paul | 40–23 | 63.49% |
| Seo Seung Doo vs Jin | 28–26 | 51.85% |
| Seo Seung Doo vs Reina | 29–25 | 53.70% |
| Seo Seung Doo vs Law | 32–20 | 61.54% |
| Seo Seung Doo vs Azucena | 31–20 | 60.78% |
| Seo Seung Doo vs Heihachi | 27–23 | 54.00% |
| Seo Seung Doo vs Hwoarang | 24–20 | 54.55% |
| Seo Seung Doo vs Lili | 15–26 | 36.59% |
| Seo Seung Doo vs King | 14–25 | 35.90% |
| Seo Seung Doo vs Victor | 17–21 | 44.74% |
| Seo Seung Doo vs Claudio | 18–18 | 50.00% |
| Seo Seung Doo vs Asuka | 15–20 | 42.86% |
| Seo Seung Doo vs Devil Jin | 7–22 | 24.14% |
| Seo Seung Doo vs Yoshimitsu | 15–13 | 53.57% |
| Seo Seung Doo vs Jun | 15–12 | 55.56% |
| Seo Seung Doo vs Feng | 9–16 | 36.00% |
| Seo Seung Doo vs Alisa | 8–14 | 36.36% |
| Seo Seung Doo vs Xiaoyu | 8–12 | 40.00% |
| Seo Seung Doo vs Miary Zo | 9–11 | 45.00% |
| Seo Seung Doo vs Lars | 8–11 | 42.11% |
| Seo Seung Doo vs Leroy | 9–10 | 47.37% |
| Seo Seung Doo vs Shaheen | 9–9 | 50.00% |
| Seo Seung Doo vs Nina | 11–6 | 64.71% |
| Seo Seung Doo vs Lee | 11–6 | 64.71% |
| Seo Seung Doo vs Jack-8 | 7–9 | 43.75% |
| Seo Seung Doo vs Eddy | 7–8 | 46.67% |
| Seo Seung Doo vs Zafina | 8–6 | 57.14% |
| Seo Seung Doo vs Kuma | 2–10 | 16.67% |
| Seo Seung Doo vs Lidia | 7–5 | 58.33% |
| Seo Seung Doo vs Leo | 7–3 | 70.00% |
| Seo Seung Doo vs Panda | 5–5 | 50.00% |
| Seo Seung Doo vs Clive | 1–7 | 12.50% |
| Seo Seung Doo vs Fahkumram | 4–4 | 50.00% |
| Seo Seung Doo vs Anna | 4–2 | 66.67% |
| Seo Seung Doo vs Raven | 5–0 | 100.00% |
| Seo Seung Doo vs Armor King | 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.