| Sekaiichi vs Heihachi | 87–41 | 67.97% |
| Sekaiichi vs Bryan | 41–56 | 42.27% |
| Sekaiichi vs Kazuya | 66–31 | 68.04% |
| Sekaiichi vs Reina | 51–45–1 | 53.12% |
| Sekaiichi vs Jin | 53–38 | 58.24% |
| Sekaiichi vs King | 56–34 | 62.22% |
| Sekaiichi vs Clive | 45–40 | 52.94% |
| Sekaiichi vs Steve | 45–27 | 62.50% |
| Sekaiichi vs Yoshimitsu | 44–25 | 63.77% |
| Sekaiichi vs Dragunov | 45–22 | 67.16% |
| Sekaiichi vs Lars | 39–26 | 60.00% |
| Sekaiichi vs Devil Jin | 30–30 | 50.00% |
| Sekaiichi vs Lili | 39–18 | 68.42% |
| Sekaiichi vs Lee | 39–17 | 69.64% |
| Sekaiichi vs Hwoarang | 34–21 | 61.82% |
| Sekaiichi vs Paul | 22–32 | 40.74% |
| Sekaiichi vs Armor King | 36–18 | 66.67% |
| Sekaiichi vs Nina | 27–19 | 58.70% |
| Sekaiichi vs Law | 24–20 | 54.55% |
| Sekaiichi vs Asuka | 25–17 | 59.52% |
| Sekaiichi vs Azucena | 20–21 | 48.78% |
| Sekaiichi vs Alisa | 22–17 | 56.41% |
| Sekaiichi vs Raven | 21–18 | 53.85% |
| Sekaiichi vs Feng | 14–21 | 40.00% |
| Sekaiichi vs Victor | 23–11 | 67.65% |
| Sekaiichi vs Leroy | 12–18 | 40.00% |
| Sekaiichi vs Jun | 21–7 | 75.00% |
| Sekaiichi vs Eddy | 19–8 | 70.37% |
| Sekaiichi vs Xiaoyu | 13–12 | 52.00% |
| Sekaiichi vs Miary Zo | 18–7 | 72.00% |
| Sekaiichi vs Jack-8 | 11–13 | 45.83% |
| Sekaiichi vs Leo | 11–12 | 47.83% |
| Sekaiichi vs Kuma | 10–11 | 47.62% |
| Sekaiichi vs Claudio | 10–9 | 52.63% |
| Sekaiichi vs Lidia | 12–7 | 63.16% |
| Sekaiichi vs Zafina | 4–12 | 25.00% |
| Sekaiichi vs Shaheen | 8–7 | 53.33% |
| Sekaiichi vs Fahkumram | 3–7 | 30.00% |
| Sekaiichi vs Panda | 4–1 | 80.00% |
| Sekaiichi vs Anna | 3–1 | 75.00% |
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.