| Koji vs Eddy | 3–9–1 | 25.00% |
| Koji vs Kazuya | 4–9 | 30.77% |
| Koji vs King | 6–5 | 54.55% |
| Koji vs Jin | 6–4 | 60.00% |
| Koji vs Lee | 6–0 | 100.00% |
| Koji vs Nina | 0–5 | 0.00% |
| Koji vs Azucena | 2–3 | 40.00% |
| Koji vs Xiaoyu | 0–3 | 0.00% |
| Koji vs Steve | 2–1 | 66.67% |
| Koji vs Lili | 0–3 | 0.00% |
| Koji vs Leroy | 0–3 | 0.00% |
| Koji vs Lars | 1–1 | 50.00% |
| Koji vs Paul | 0–2 | 0.00% |
| Koji vs Jack-8 | 0–2 | 0.00% |
| Koji vs Devil Jin | 0–2 | 0.00% |
| Koji vs Law | 0–1 | 0.00% |
| Koji vs Hwoarang | 0–1 | 0.00% |
| Koji vs Asuka | 0–1 | 0.00% |
| Koji vs Reina | 0–1 | 0.00% |
| Koji vs Victor | 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.