| KOI1 vs Reina | 9–18 | 33.33% |
| KOI1 vs Lidia | 7–15 | 31.82% |
| KOI1 vs Law | 10–9 | 52.63% |
| KOI1 vs Steve | 8–11 | 42.11% |
| KOI1 vs Jun | 1–16 | 5.88% |
| KOI1 vs Kazuya | 1–14 | 6.67% |
| KOI1 vs King | 0–14 | 0.00% |
| KOI1 vs Yoshimitsu | 6–7 | 46.15% |
| KOI1 vs Hwoarang | 3–10 | 23.08% |
| KOI1 vs Jin | 0–11 | 0.00% |
| KOI1 vs Dragunov | 2–9 | 18.18% |
| KOI1 vs Alisa | 3–7 | 30.00% |
| KOI1 vs Azucena | 2–7 | 22.22% |
| KOI1 vs Eddy | 0–9 | 0.00% |
| KOI1 vs Bryan | 0–6 | 0.00% |
| KOI1 vs Leo | 0–6 | 0.00% |
| KOI1 vs Lee | 0–6 | 0.00% |
| KOI1 vs Victor | 2–4 | 33.33% |
| KOI1 vs Paul | 0–5 | 0.00% |
| KOI1 vs Xiaoyu | 0–5 | 0.00% |
| KOI1 vs Jack-8 | 1–4 | 20.00% |
| KOI1 vs Asuka | 1–4 | 20.00% |
| KOI1 vs Lili | 3–2 | 60.00% |
| KOI1 vs Claudio | 1–4 | 20.00% |
| KOI1 vs Nina | 2–3 | 40.00% |
| KOI1 vs Leroy | 3–2 | 60.00% |
| KOI1 vs Devil Jin | 2–2 | 50.00% |
| KOI1 vs Shaheen | 0–4 | 0.00% |
| KOI1 vs Feng | 0–2 | 0.00% |
| KOI1 vs Raven | 2–0 | 100.00% |
| KOI1 vs Kuma | 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.