| Slawek vs Law | 10–12 | 45.45% |
| Slawek vs Jin | 8–13 | 38.10% |
| Slawek vs King | 12–8 | 60.00% |
| Slawek vs Kazuya | 7–10 | 41.18% |
| Slawek vs Steve | 6–10 | 37.50% |
| Slawek vs Heihachi | 7–9 | 43.75% |
| Slawek vs Bryan | 3–11 | 21.43% |
| Slawek vs Eddy | 6–8 | 42.86% |
| Slawek vs Hwoarang | 6–7 | 46.15% |
| Slawek vs Reina | 11–2 | 84.62% |
| Slawek vs Azucena | 10–3 | 76.92% |
| Slawek vs Lili | 7–5 | 58.33% |
| Slawek vs Xiaoyu | 9–1 | 90.00% |
| Slawek vs Asuka | 2–8 | 20.00% |
| Slawek vs Lars | 4–6 | 40.00% |
| Slawek vs Devil Jin | 4–5 | 44.44% |
| Slawek vs Dragunov | 5–4 | 55.56% |
| Slawek vs Clive | 7–2 | 77.78% |
| Slawek vs Lee | 5–3 | 62.50% |
| Slawek vs Victor | 2–6 | 25.00% |
| Slawek vs Yoshimitsu | 5–2 | 71.43% |
| Slawek vs Alisa | 2–4 | 33.33% |
| Slawek vs Paul | 2–3 | 40.00% |
| Slawek vs Jack-8 | 3–2 | 60.00% |
| Slawek vs Leroy | 2–3 | 40.00% |
| Slawek vs Raven | 4–1 | 80.00% |
| Slawek vs Lidia | 2–2 | 50.00% |
| Slawek vs Nina | 2–1 | 66.67% |
| Slawek vs Jun | 2–1 | 66.67% |
| Slawek vs Feng | 0–2 | 0.00% |
| Slawek vs Claudio | 1–1 | 50.00% |
| Slawek vs Shaheen | 2–0 | 100.00% |
| Slawek vs Armor King | 0–2 | 0.00% |
| Slawek vs Kuma | 1–0 | 100.00% |
| Slawek vs Zafina | 1–0 | 100.00% |
| Slawek vs Anna | 1–0 | 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.