Name history
| RG | SeiiYuumi | |
| NT/RG SeiiYuumi | |
| RG/NT SeiiYuumi | |
| NT SeiiYuumi | |
| SeiiYuumi.EXA |
| RG | SeiiYuumi vs Kazuya | 82–115 | 41.62% |
| RG | SeiiYuumi vs Jin | 69–82 | 45.70% |
| RG | SeiiYuumi vs Dragunov | 59–77 | 43.38% |
| RG | SeiiYuumi vs Bryan | 66–68 | 49.25% |
| RG | SeiiYuumi vs Steve | 60–66 | 47.62% |
| RG | SeiiYuumi vs Yoshimitsu | 55–58 | 48.67% |
| RG | SeiiYuumi vs King | 44–68 | 39.29% |
| RG | SeiiYuumi vs Law | 56–50 | 52.83% |
| RG | SeiiYuumi vs Hwoarang | 47–53 | 47.00% |
| RG | SeiiYuumi vs Reina | 52–41 | 55.91% |
| RG | SeiiYuumi vs Paul | 29–58 | 33.33% |
| RG | SeiiYuumi vs Lili | 45–35 | 56.25% |
| RG | SeiiYuumi vs Devil Jin | 41–38 | 51.90% |
| RG | SeiiYuumi vs Victor | 41–38 | 51.90% |
| RG | SeiiYuumi vs Jun | 34–34 | 50.00% |
| RG | SeiiYuumi vs Eddy | 27–31 | 46.55% |
| RG | SeiiYuumi vs Lars | 27–30 | 47.37% |
| RG | SeiiYuumi vs Xiaoyu | 22–34 | 39.29% |
| RG | SeiiYuumi vs Asuka | 23–33 | 41.07% |
| RG | SeiiYuumi vs Heihachi | 27–26 | 50.94% |
| RG | SeiiYuumi vs Fahkumram | 19–29 | 39.58% |
| RG | SeiiYuumi vs Lee | 19–24 | 44.19% |
| RG | SeiiYuumi vs Armor King | 21–22 | 48.84% |
| RG | SeiiYuumi vs Claudio | 21–19 | 52.50% |
| RG | SeiiYuumi vs Azucena | 19–17 | 52.78% |
| RG | SeiiYuumi vs Jack-8 | 12–21 | 36.36% |
| RG | SeiiYuumi vs Leroy | 9–23 | 28.12% |
| RG | SeiiYuumi vs Nina | 19–11 | 63.33% |
| RG | SeiiYuumi vs Feng | 7–22 | 24.14% |
| RG | SeiiYuumi vs Zafina | 16–12 | 57.14% |
| RG | SeiiYuumi vs Raven | 8–20 | 28.57% |
| RG | SeiiYuumi vs Shaheen | 5–20 | 20.00% |
| RG | SeiiYuumi vs Clive | 9–15 | 37.50% |
| RG | SeiiYuumi vs Alisa | 14–9 | 60.87% |
| RG | SeiiYuumi vs Leo | 9–12 | 42.86% |
| RG | SeiiYuumi vs Lidia | 8–10 | 44.44% |
| RG | SeiiYuumi vs Anna | 7–8 | 46.67% |
| RG | SeiiYuumi vs Kuma | 2–7 | 22.22% |
| RG | SeiiYuumi vs Panda | 2–2 | 50.00% |
| RG | SeiiYuumi vs Miary Zo | 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.