| koiiiiii vs King | 8–4 | 66.67% |
| koiiiiii vs Kazuya | 7–2 | 77.78% |
| koiiiiii vs Lili | 2–7 | 22.22% |
| koiiiiii vs Jin | 7–1 | 87.50% |
| koiiiiii vs Reina | 6–2 | 75.00% |
| koiiiiii vs Steve | 2–5 | 28.57% |
| koiiiiii vs Azucena | 4–3 | 57.14% |
| koiiiiii vs Bryan | 4–2 | 66.67% |
| koiiiiii vs Lars | 3–3 | 50.00% |
| koiiiiii vs Kuma | 3–3 | 50.00% |
| koiiiiii vs Victor | 4–1 | 80.00% |
| koiiiiii vs Fahkumram | 4–1 | 80.00% |
| koiiiiii vs Xiaoyu | 2–2 | 50.00% |
| koiiiiii vs Feng | 2–2 | 50.00% |
| koiiiiii vs Asuka | 0–3 | 0.00% |
| koiiiiii vs Dragunov | 2–1 | 66.67% |
| koiiiiii vs Leroy | 2–1 | 66.67% |
| koiiiiii vs Clive | 1–2 | 33.33% |
| koiiiiii vs Leo | 2–0 | 100.00% |
| koiiiiii vs Alisa | 0–2 | 0.00% |
| koiiiiii vs Jun | 2–0 | 100.00% |
| koiiiiii vs Eddy | 0–2 | 0.00% |
| koiiiiii vs Heihachi | 0–2 | 0.00% |
| koiiiiii vs Anna | 0–2 | 0.00% |
| koiiiiii vs Law | 0–1 | 0.00% |
| koiiiiii vs Hwoarang | 1–0 | 100.00% |
| koiiiiii vs Raven | 1–0 | 100.00% |
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.