| Kosti vs Heihachi | 52–41 | 55.91% |
| Kosti vs Kazuya | 35–42 | 45.45% |
| Kosti vs Reina | 41–24 | 63.08% |
| Kosti vs King | 33–29 | 53.23% |
| Kosti vs Jin | 30–27 | 52.63% |
| Kosti vs Law | 32–18 | 64.00% |
| Kosti vs Steve | 32–17 | 65.31% |
| Kosti vs Dragunov | 27–13 | 67.50% |
| Kosti vs Bryan | 16–21 | 43.24% |
| Kosti vs Paul | 20–12 | 62.50% |
| Kosti vs Hwoarang | 23–7 | 76.67% |
| Kosti vs Azucena | 16–11 | 59.26% |
| Kosti vs Devil Jin | 13–12 | 52.00% |
| Kosti vs Lili | 12–12 | 50.00% |
| Kosti vs Eddy | 9–14 | 39.13% |
| Kosti vs Armor King | 12–11 | 52.17% |
| Kosti vs Lee | 14–8 | 63.64% |
| Kosti vs Alisa | 11–9 | 55.00% |
| Kosti vs Victor | 9–11 | 45.00% |
| Kosti vs Yoshimitsu | 6–12 | 33.33% |
| Kosti vs Lars | 10–7 | 58.82% |
| Kosti vs Jun | 8–9 | 47.06% |
| Kosti vs Claudio | 7–9 | 43.75% |
| Kosti vs Nina | 10–5 | 66.67% |
| Kosti vs Asuka | 10–4 | 71.43% |
| Kosti vs Feng | 9–5 | 64.29% |
| Kosti vs Leo | 7–7 | 50.00% |
| Kosti vs Xiaoyu | 6–6 | 50.00% |
| Kosti vs Lidia | 9–3 | 75.00% |
| Kosti vs Raven | 7–4 | 63.64% |
| Kosti vs Fahkumram | 3–8 | 27.27% |
| Kosti vs Miary Zo | 6–5 | 54.55% |
| Kosti vs Clive | 6–2 | 75.00% |
| Kosti vs Anna | 5–2 | 71.43% |
| Kosti vs Jack-8 | 3–3 | 50.00% |
| Kosti vs Leroy | 3–3 | 50.00% |
| Kosti vs Shaheen | 2–1 | 66.67% |
| Kosti vs Zafina | 3–0 | 100.00% |
| Kosti vs Kuma | 2–0 | 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.