| Koji vs Eddy | 9–10 | 47.37% |
| Koji vs Lili | 3–4 | 42.86% |
| Koji vs Jin | 6–0 | 100.00% |
| Koji vs Kazuya | 5–1 | 83.33% |
| Koji vs Lars | 4–2 | 66.67% |
| Koji vs Law | 4–1 | 80.00% |
| Koji vs Bryan | 4–1 | 80.00% |
| Koji vs Devil Jin | 3–2 | 60.00% |
| Koji vs Leroy | 4–1 | 80.00% |
| Koji vs Yoshimitsu | 2–2 | 50.00% |
| Koji vs Dragunov | 3–1 | 75.00% |
| Koji vs Alisa | 3–0 | 100.00% |
| Koji vs Paul | 0–2 | 0.00% |
| Koji vs King | 2–0 | 100.00% |
| Koji vs Feng | 0–2 | 0.00% |
| Koji vs Claudio | 2–0 | 100.00% |
| Koji vs Nina | 2–0 | 100.00% |
| Koji vs Zafina | 2–0 | 100.00% |
| Koji vs Jun | 2–0 | 100.00% |
| Koji vs Reina | 2–0 | 100.00% |
| Koji vs Victor | 2–0 | 100.00% |
| Koji vs Raven | 2–0 | 100.00% |
| Koji vs Steve | 1–0 | 100.00% |
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.