| seiji vs Bryan | 230–131 | 63.71% |
| seiji vs Kazuya | 131–126 | 50.97% |
| seiji vs Dragunov | 151–97 | 60.89% |
| seiji vs King | 149–71 | 67.73% |
| seiji vs Hwoarang | 111–108 | 50.68% |
| seiji vs Steve | 122–85 | 58.94% |
| seiji vs Feng | 103–98 | 51.24% |
| seiji vs Victor | 113–83 | 57.65% |
| seiji vs Paul | 102–84 | 54.84% |
| seiji vs Reina | 113–64 | 63.84% |
| seiji vs Jack-8 | 96–80 | 54.55% |
| seiji vs Jin | 98–67 | 59.39% |
| seiji vs Asuka | 87–73 | 54.37% |
| seiji vs Lili | 88–72 | 55.00% |
| seiji vs Claudio | 91–67 | 57.59% |
| seiji vs Lars | 87–68 | 56.13% |
| seiji vs Nina | 80–73 | 52.29% |
| seiji vs Azucena | 99–52 | 65.56% |
| seiji vs Yoshimitsu | 61–80 | 43.26% |
| seiji vs Devil Jin | 65–75 | 46.43% |
| seiji vs Eddy | 74–60 | 55.22% |
| seiji vs Law | 68–62 | 52.31% |
| seiji vs Lee | 73–57 | 56.15% |
| seiji vs Alisa | 68–53 | 56.20% |
| seiji vs Xiaoyu | 56–55 | 50.45% |
| seiji vs Fahkumram | 72–39 | 64.86% |
| seiji vs Jun | 57–51 | 52.78% |
| seiji vs Raven | 60–47 | 56.07% |
| seiji vs Leroy | 55–51 | 51.89% |
| seiji vs Heihachi | 41–63 | 39.42% |
| seiji vs Kuma | 47–54 | 46.53% |
| seiji vs Lidia | 53–39 | 57.61% |
| seiji vs Zafina | 51–38 | 57.30% |
| seiji vs Shaheen | 53–35 | 60.23% |
| seiji vs Leo | 43–32 | 57.33% |
| seiji vs Anna | 35–35 | 50.00% |
| seiji vs Clive | 23–29 | 44.23% |
| seiji vs Panda | 22–11 | 66.67% |
| seiji vs Miary Zo | 15–16 | 48.39% |
| seiji vs Armor King | 19–9 | 67.86% |
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.