| Kozak vs Kazuya | 144–105 | 57.83% |
| Kozak vs Jin | 95–126 | 42.99% |
| Kozak vs Bryan | 86–82 | 51.19% |
| Kozak vs Reina | 91–62 | 59.48% |
| Kozak vs King | 72–71 | 50.35% |
| Kozak vs Hwoarang | 74–69 | 51.75% |
| Kozak vs Heihachi | 79–64 | 55.24% |
| Kozak vs Dragunov | 72–54 | 57.14% |
| Kozak vs Steve | 57–58 | 49.57% |
| Kozak vs Yoshimitsu | 50–56 | 47.17% |
| Kozak vs Paul | 55–49 | 52.88% |
| Kozak vs Law | 55–41 | 57.29% |
| Kozak vs Clive | 43–53 | 44.79% |
| Kozak vs Devil Jin | 37–50 | 42.53% |
| Kozak vs Lee | 33–47 | 41.25% |
| Kozak vs Lili | 53–26 | 67.09% |
| Kozak vs Jun | 45–33 | 57.69% |
| Kozak vs Lidia | 40–28 | 58.82% |
| Kozak vs Nina | 32–21 | 60.38% |
| Kozak vs Azucena | 22–30 | 42.31% |
| Kozak vs Lars | 23–24 | 48.94% |
| Kozak vs Victor | 22–23 | 48.89% |
| Kozak vs Asuka | 26–18 | 59.09% |
| Kozak vs Eddy | 29–14 | 67.44% |
| Kozak vs Leroy | 25–17 | 59.52% |
| Kozak vs Jack-8 | 17–24 | 41.46% |
| Kozak vs Feng | 23–18 | 56.10% |
| Kozak vs Fahkumram | 22–18 | 55.00% |
| Kozak vs Claudio | 20–18 | 52.63% |
| Kozak vs Xiaoyu | 23–13 | 63.89% |
| Kozak vs Raven | 11–24 | 31.43% |
| Kozak vs Armor King | 20–14 | 58.82% |
| Kozak vs Anna | 15–15 | 50.00% |
| Kozak vs Alisa | 15–14 | 51.72% |
| Kozak vs Leo | 14–13 | 51.85% |
| Kozak vs Shaheen | 5–13 | 27.78% |
| Kozak vs Zafina | 7–11 | 38.89% |
| Kozak vs Kuma | 8–8 | 50.00% |
| Kozak vs Miary Zo | 3–4 | 42.86% |
| Kozak vs Panda | 1–1 | 50.00% |
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.