| Koifish vs Reina | 12–11 | 52.17% |
| Koifish vs King | 6–4 | 60.00% |
| Koifish vs Kazuya | 4–6 | 40.00% |
| Koifish vs Jin | 2–4 | 33.33% |
| Koifish vs Steve | 3–3 | 50.00% |
| Koifish vs Feng | 6–0 | 100.00% |
| Koifish vs Lars | 2–4 | 33.33% |
| Koifish vs Leroy | 4–2 | 66.67% |
| Koifish vs Azucena | 4–2 | 66.67% |
| Koifish vs Lidia | 4–2 | 66.67% |
| Koifish vs Hwoarang | 5–0 | 100.00% |
| Koifish vs Jack-8 | 3–2 | 60.00% |
| Koifish vs Lili | 2–3 | 40.00% |
| Koifish vs Law | 0–4 | 0.00% |
| Koifish vs Nina | 2–2 | 50.00% |
| Koifish vs Victor | 2–2 | 50.00% |
| Koifish vs Yoshimitsu | 2–1 | 66.67% |
| Koifish vs Asuka | 3–0 | 100.00% |
| Koifish vs Devil Jin | 1–2 | 33.33% |
| Koifish vs Alisa | 1–2 | 33.33% |
| Koifish vs Xiaoyu | 0–2 | 0.00% |
| Koifish vs Bryan | 0–2 | 0.00% |
| Koifish vs Panda | 0–2 | 0.00% |
| Koifish vs Dragunov | 0–1 | 0.00% |
| Koifish 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.