| Koii vs Steve | 20–6 | 76.92% |
| Koii vs Reina | 19–7 | 73.08% |
| Koii vs Law | 22–3 | 88.00% |
| Koii vs King | 20–5 | 80.00% |
| Koii vs Bryan | 17–6 | 73.91% |
| Koii vs Lee | 14–8 | 63.64% |
| Koii vs Nina | 11–8 | 57.89% |
| Koii vs Hwoarang | 12–6 | 66.67% |
| Koii vs Lars | 14–3 | 82.35% |
| Koii vs Lili | 10–6 | 62.50% |
| Koii vs Dragunov | 7–9 | 43.75% |
| Koii vs Jin | 11–4 | 73.33% |
| Koii vs Paul | 9–5 | 64.29% |
| Koii vs Raven | 8–6 | 57.14% |
| Koii vs Heihachi | 9–5 | 64.29% |
| Koii vs Xiaoyu | 9–4 | 69.23% |
| Koii vs Kazuya | 10–3 | 76.92% |
| Koii vs Asuka | 7–6 | 53.85% |
| Koii vs Eddy | 11–2 | 84.62% |
| Koii vs Azucena | 8–4 | 66.67% |
| Koii vs Fahkumram | 9–2 | 81.82% |
| Koii vs Yoshimitsu | 8–2 | 80.00% |
| Koii vs Alisa | 6–2 | 75.00% |
| Koii vs Leroy | 5–3 | 62.50% |
| Koii vs Jun | 6–2 | 75.00% |
| Koii vs Devil Jin | 6–1 | 85.71% |
| Koii vs Leo | 3–3 | 50.00% |
| Koii vs Victor | 6–0 | 100.00% |
| Koii vs Lidia | 4–0 | 100.00% |
| Koii vs Clive | 3–1 | 75.00% |
| Koii vs Jack-8 | 3–0 | 100.00% |
| Koii vs Kuma | 3–0 | 100.00% |
| Koii vs Claudio | 2–0 | 100.00% |
| Koii vs Shaheen | 2–0 | 100.00% |
| Koii vs Zafina | 2–0 | 100.00% |
| Koii vs Feng | 1–0 | 100.00% |
| Koii vs Anna | 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.