| Kosiarz vs Kazuya | 158–161 | 49.53% |
| Kosiarz vs Jin | 145–150 | 49.15% |
| Kosiarz vs Law | 121–98 | 55.25% |
| Kosiarz vs King | 97–114 | 45.97% |
| Kosiarz vs Bryan | 82–125 | 39.61% |
| Kosiarz vs Steve | 83–100 | 45.36% |
| Kosiarz vs Hwoarang | 82–98 | 45.56% |
| Kosiarz vs Eddy | 70–101 | 40.94% |
| Kosiarz vs Reina | 96–52 | 64.86% |
| Kosiarz vs Yoshimitsu | 57–86 | 39.86% |
| Kosiarz vs Lidia | 57–85 | 40.14% |
| Kosiarz vs Paul | 60–72 | 45.45% |
| Kosiarz vs Jun | 56–62 | 47.46% |
| Kosiarz vs Heihachi | 47–71 | 39.83% |
| Kosiarz vs Dragunov | 39–71 | 35.45% |
| Kosiarz vs Lee | 59–43 | 57.84% |
| Kosiarz vs Clive | 33–68 | 32.67% |
| Kosiarz vs Asuka | 47–52 | 47.47% |
| Kosiarz vs Feng | 50–46 | 52.08% |
| Kosiarz vs Azucena | 38–58 | 39.58% |
| Kosiarz vs Devil Jin | 43–46 | 48.31% |
| Kosiarz vs Lili | 43–46 | 48.31% |
| Kosiarz vs Victor | 44–45 | 49.44% |
| Kosiarz vs Lars | 39–41 | 48.75% |
| Kosiarz vs Nina | 34–42 | 44.74% |
| Kosiarz vs Alisa | 29–42 | 40.85% |
| Kosiarz vs Leroy | 28–25 | 52.83% |
| Kosiarz vs Xiaoyu | 24–23 | 51.06% |
| Kosiarz vs Leo | 25–22 | 53.19% |
| Kosiarz vs Raven | 19–19 | 50.00% |
| Kosiarz vs Claudio | 18–17 | 51.43% |
| Kosiarz vs Kuma | 18–16 | 52.94% |
| Kosiarz vs Shaheen | 17–14 | 54.84% |
| Kosiarz vs Jack-8 | 16–13 | 55.17% |
| Kosiarz vs Zafina | 10–12 | 45.45% |
| Kosiarz vs Panda | 4–10 | 28.57% |
| Kosiarz vs Armor King | 7–4 | 63.64% |
| Kosiarz vs Miary Zo | 1–4 | 20.00% |
| Kosiarz vs Anna | 2–1 | 66.67% |
| Kosiarz vs Fahkumram | 0–3 | 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.