| Kaczor121 vs Jin | 50–53 | 48.54% |
| Kaczor121 vs Kazuya | 51–42 | 54.84% |
| Kaczor121 vs Hwoarang | 49–38 | 56.32% |
| Kaczor121 vs Law | 38–48 | 44.19% |
| Kaczor121 vs King | 32–35 | 47.76% |
| Kaczor121 vs Bryan | 25–25 | 50.00% |
| Kaczor121 vs Lili | 33–17 | 66.00% |
| Kaczor121 vs Steve | 27–22 | 55.10% |
| Kaczor121 vs Reina | 27–20 | 57.45% |
| Kaczor121 vs Eddy | 28–18 | 60.87% |
| Kaczor121 vs Paul | 20–24 | 45.45% |
| Kaczor121 vs Dragunov | 17–25 | 40.48% |
| Kaczor121 vs Nina | 22–17 | 56.41% |
| Kaczor121 vs Heihachi | 22–17 | 56.41% |
| Kaczor121 vs Alisa | 19–17 | 52.78% |
| Kaczor121 vs Lars | 17–18 | 48.57% |
| Kaczor121 vs Yoshimitsu | 10–21 | 32.26% |
| Kaczor121 vs Asuka | 10–19 | 34.48% |
| Kaczor121 vs Devil Jin | 12–17 | 41.38% |
| Kaczor121 vs Jun | 13–16 | 44.83% |
| Kaczor121 vs Lee | 18–10 | 64.29% |
| Kaczor121 vs Azucena | 10–15 | 40.00% |
| Kaczor121 vs Armor King | 14–11 | 56.00% |
| Kaczor121 vs Xiaoyu | 7–16 | 30.43% |
| Kaczor121 vs Victor | 9–14 | 39.13% |
| Kaczor121 vs Leo | 12–9 | 57.14% |
| Kaczor121 vs Miary Zo | 11–9 | 55.00% |
| Kaczor121 vs Kuma | 7–10 | 41.18% |
| Kaczor121 vs Clive | 6–11 | 35.29% |
| Kaczor121 vs Feng | 7–7 | 50.00% |
| Kaczor121 vs Raven | 7–6 | 53.85% |
| Kaczor121 vs Fahkumram | 6–5 | 54.55% |
| Kaczor121 vs Claudio | 6–4 | 60.00% |
| Kaczor121 vs Panda | 4–6 | 40.00% |
| Kaczor121 vs Leroy | 5–4 | 55.56% |
| Kaczor121 vs Shaheen | 2–6 | 25.00% |
| Kaczor121 vs Jack-8 | 3–4 | 42.86% |
| Kaczor121 vs Lidia | 5–0 | 100.00% |
| Kaczor121 vs Anna | 0–2 | 0.00% |
| Kaczor121 vs Zafina | 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.