| Koyossu vs Jin | 24–22 | 52.17% |
| Koyossu vs Bryan | 23–19 | 54.76% |
| Koyossu vs Kazuya | 19–16 | 54.29% |
| Koyossu vs King | 11–23 | 32.35% |
| Koyossu vs Heihachi | 15–17 | 46.88% |
| Koyossu vs Reina | 16–8 | 66.67% |
| Koyossu vs Steve | 8–11 | 42.11% |
| Koyossu vs Yoshimitsu | 6–11 | 35.29% |
| Koyossu vs Hwoarang | 7–9 | 43.75% |
| Koyossu vs Law | 8–7 | 53.33% |
| Koyossu vs Paul | 8–6 | 57.14% |
| Koyossu vs Jack-8 | 7–7 | 50.00% |
| Koyossu vs Asuka | 8–6 | 57.14% |
| Koyossu vs Dragunov | 7–6 | 53.85% |
| Koyossu vs Feng | 7–4 | 63.64% |
| Koyossu vs Jun | 7–4 | 63.64% |
| Koyossu vs Devil Jin | 4–5 | 44.44% |
| Koyossu vs Leo | 4–5 | 44.44% |
| Koyossu vs Leroy | 5–4 | 55.56% |
| Koyossu vs Azucena | 3–5 | 37.50% |
| Koyossu vs Eddy | 5–3 | 62.50% |
| Koyossu vs Lili | 3–4 | 42.86% |
| Koyossu vs Alisa | 5–2 | 71.43% |
| Koyossu vs Lee | 4–3 | 57.14% |
| Koyossu vs Lidia | 5–2 | 71.43% |
| Koyossu vs Xiaoyu | 2–4 | 33.33% |
| Koyossu vs Zafina | 2–4 | 33.33% |
| Koyossu vs Claudio | 3–2 | 60.00% |
| Koyossu vs Victor | 4–1 | 80.00% |
| Koyossu vs Clive | 1–4 | 20.00% |
| Koyossu vs Lars | 2–2 | 50.00% |
| Koyossu vs Nina | 1–2 | 33.33% |
| Koyossu vs Raven | 1–2 | 33.33% |
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.