| Koira vs Jin | 23–9 | 71.88% |
| Koira vs Kazuya | 25–6 | 80.65% |
| Koira vs Dragunov | 18–11 | 62.07% |
| Koira vs Hwoarang | 15–4 | 78.95% |
| Koira vs Reina | 13–6 | 68.42% |
| Koira vs King | 8–10 | 44.44% |
| Koira vs Steve | 9–7 | 56.25% |
| Koira vs Asuka | 7–8 | 46.67% |
| Koira vs Jun | 7–7 | 50.00% |
| Koira vs Yoshimitsu | 5–8 | 38.46% |
| Koira vs Bryan | 6–4 | 60.00% |
| Koira vs Lee | 3–7 | 30.00% |
| Koira vs Azucena | 6–3 | 66.67% |
| Koira vs Leo | 2–4 | 33.33% |
| Koira vs Kuma | 2–4 | 33.33% |
| Koira vs Victor | 4–2 | 66.67% |
| Koira vs Law | 3–2 | 60.00% |
| Koira vs Jack-8 | 1–4 | 20.00% |
| Koira vs Lili | 2–3 | 40.00% |
| Koira vs Devil Jin | 4–0 | 100.00% |
| Koira vs Feng | 1–2 | 33.33% |
| Koira vs Lidia | 1–2 | 33.33% |
| Koira vs Alisa | 0–2 | 0.00% |
| Koira vs Leroy | 2–0 | 100.00% |
| Koira vs Eddy | 2–0 | 100.00% |
| Koira vs Lars | 1–0 | 100.00% |
| Koira vs Claudio | 0–1 | 0.00% |
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.