| Koji vs Jin | 52–39 | 57.14% |
| Koji vs Reina | 45–44 | 50.56% |
| Koji vs King | 38–32 | 54.29% |
| Koji vs Steve | 39–28 | 58.21% |
| Koji vs Kazuya | 35–27 | 56.45% |
| Koji vs Victor | 24–18 | 57.14% |
| Koji vs Paul | 16–24 | 40.00% |
| Koji vs Hwoarang | 18–18 | 50.00% |
| Koji vs Lee | 17–18 | 48.57% |
| Koji vs Law | 24–10 | 70.59% |
| Koji vs Devil Jin | 18–16 | 52.94% |
| Koji vs Dragunov | 16–16 | 50.00% |
| Koji vs Bryan | 14–17 | 45.16% |
| Koji vs Lidia | 15–15 | 50.00% |
| Koji vs Jun | 13–14 | 48.15% |
| Koji vs Fahkumram | 17–8 | 68.00% |
| Koji vs Lars | 4–20 | 16.67% |
| Koji vs Xiaoyu | 11–12 | 47.83% |
| Koji vs Lili | 13–10 | 56.52% |
| Koji vs Azucena | 11–12 | 47.83% |
| Koji vs Heihachi | 11–12 | 47.83% |
| Koji vs Eddy | 12–10 | 54.55% |
| Koji vs Asuka | 11–10 | 52.38% |
| Koji vs Nina | 10–10 | 50.00% |
| Koji vs Zafina | 8–10 | 44.44% |
| Koji vs Yoshimitsu | 7–7 | 50.00% |
| Koji vs Kuma | 9–4 | 69.23% |
| Koji vs Armor King | 9–4 | 69.23% |
| Koji vs Leroy | 4–7 | 36.36% |
| Koji vs Raven | 4–7 | 36.36% |
| Koji vs Feng | 6–4 | 60.00% |
| Koji vs Leo | 2–6 | 25.00% |
| Koji vs Alisa | 7–1 | 87.50% |
| Koji vs Claudio | 6–2 | 75.00% |
| Koji vs Jack-8 | 2–4 | 33.33% |
| Koji vs Clive | 1–5 | 16.67% |
| Koji vs Anna | 2–4 | 33.33% |
| Koji vs Shaheen | 1–4 | 20.00% |
| Koji vs Panda | 2–3 | 40.00% |
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.