| Kojiro vs Kazuya | 50–29 | 63.29% |
| Kojiro vs Armor King | 36–33 | 52.17% |
| Kojiro vs Jin | 39–19 | 67.24% |
| Kojiro vs Reina | 25–26 | 49.02% |
| Kojiro vs Bryan | 25–20 | 55.56% |
| Kojiro vs King | 23–18 | 56.10% |
| Kojiro vs Heihachi | 18–21 | 46.15% |
| Kojiro vs Lili | 15–18 | 45.45% |
| Kojiro vs Dragunov | 19–13 | 59.38% |
| Kojiro vs Hwoarang | 18–13 | 58.06% |
| Kojiro vs Yoshimitsu | 13–15 | 46.43% |
| Kojiro vs Lee | 13–12 | 52.00% |
| Kojiro vs Nina | 9–15 | 37.50% |
| Kojiro vs Paul | 16–6 | 72.73% |
| Kojiro vs Devil Jin | 10–10 | 50.00% |
| Kojiro vs Clive | 10–8 | 55.56% |
| Kojiro vs Steve | 7–9 | 43.75% |
| Kojiro vs Law | 9–6 | 60.00% |
| Kojiro vs Xiaoyu | 10–5 | 66.67% |
| Kojiro vs Leroy | 11–4 | 73.33% |
| Kojiro vs Azucena | 11–4 | 73.33% |
| Kojiro vs Victor | 6–9 | 40.00% |
| Kojiro vs Leo | 3–11 | 21.43% |
| Kojiro vs Asuka | 6–7 | 46.15% |
| Kojiro vs Jun | 4–9 | 30.77% |
| Kojiro vs Feng | 2–10 | 16.67% |
| Kojiro vs Alisa | 5–7 | 41.67% |
| Kojiro vs Fahkumram | 6–6 | 50.00% |
| Kojiro vs Raven | 6–5 | 54.55% |
| Kojiro vs Anna | 4–6 | 40.00% |
| Kojiro vs Eddy | 3–6 | 33.33% |
| Kojiro vs Lidia | 6–3 | 66.67% |
| Kojiro vs Miary Zo | 2–7 | 22.22% |
| Kojiro vs Lars | 2–4 | 33.33% |
| Kojiro vs Kuma | 4–2 | 66.67% |
| Kojiro vs Zafina | 2–4 | 33.33% |
| Kojiro vs Jack-8 | 1–4 | 20.00% |
| Kojiro vs Shaheen | 2–3 | 40.00% |
| Kojiro vs Claudio | 4–0 | 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.