| Koyomi vs Kazuya | 22–8 | 73.33% |
| Koyomi vs Jin | 13–10 | 56.52% |
| Koyomi vs Bryan | 13–7 | 65.00% |
| Koyomi vs Hwoarang | 12–6 | 66.67% |
| Koyomi vs Paul | 13–4 | 76.47% |
| Koyomi vs King | 12–4 | 75.00% |
| Koyomi vs Steve | 9–7 | 56.25% |
| Koyomi vs Reina | 7–8 | 46.67% |
| Koyomi vs Lili | 14–0 | 100.00% |
| Koyomi vs Lee | 10–4 | 71.43% |
| Koyomi vs Law | 10–3 | 76.92% |
| Koyomi vs Lars | 9–4 | 69.23% |
| Koyomi vs Eddy | 9–4 | 69.23% |
| Koyomi vs Dragunov | 10–2 | 83.33% |
| Koyomi vs Yoshimitsu | 9–2 | 81.82% |
| Koyomi vs Jun | 10–1 | 90.91% |
| Koyomi vs Asuka | 8–2 | 80.00% |
| Koyomi vs Raven | 6–4 | 60.00% |
| Koyomi vs Lidia | 6–4 | 60.00% |
| Koyomi vs Feng | 7–2 | 77.78% |
| Koyomi vs Claudio | 4–5 | 44.44% |
| Koyomi vs Alisa | 8–0 | 100.00% |
| Koyomi vs Xiaoyu | 6–1 | 85.71% |
| Koyomi vs Victor | 5–2 | 71.43% |
| Koyomi vs Leroy | 5–1 | 83.33% |
| Koyomi vs Azucena | 4–2 | 66.67% |
| Koyomi vs Devil Jin | 3–2 | 60.00% |
| Koyomi vs Leo | 4–0 | 100.00% |
| Koyomi vs Nina | 3–1 | 75.00% |
| Koyomi vs Panda | 1–3 | 25.00% |
| Koyomi vs Jack-8 | 1–2 | 33.33% |
| Koyomi vs Shaheen | 2–0 | 100.00% |
| Koyomi vs Kuma | 1–1 | 50.00% |
| Koyomi vs Zafina | 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.