| Kacper 8979 vs Law | 6–11 | 35.29% |
| Kacper 8979 vs Clive | 6–8 | 42.86% |
| Kacper 8979 vs Jin | 6–7 | 46.15% |
| Kacper 8979 vs Yoshimitsu | 9–3 | 75.00% |
| Kacper 8979 vs Victor | 6–5 | 54.55% |
| Kacper 8979 vs Steve | 3–7 | 30.00% |
| Kacper 8979 vs Jun | 7–3 | 70.00% |
| Kacper 8979 vs King | 4–5 | 44.44% |
| Kacper 8979 vs Eddy | 1–8 | 11.11% |
| Kacper 8979 vs Alisa | 4–4 | 50.00% |
| Kacper 8979 vs Hwoarang | 0–7 | 0.00% |
| Kacper 8979 vs Kazuya | 2–5 | 28.57% |
| Kacper 8979 vs Lili | 3–4 | 42.86% |
| Kacper 8979 vs Nina | 4–3 | 57.14% |
| Kacper 8979 vs Asuka | 2–4 | 33.33% |
| Kacper 8979 vs Dragunov | 4–2 | 66.67% |
| Kacper 8979 vs Paul | 3–2 | 60.00% |
| Kacper 8979 vs Lars | 3–2 | 60.00% |
| Kacper 8979 vs Bryan | 3–1 | 75.00% |
| Kacper 8979 vs Claudio | 0–3 | 0.00% |
| Kacper 8979 vs Leroy | 2–1 | 66.67% |
| Kacper 8979 vs Jack-8 | 1–1 | 50.00% |
| Kacper 8979 vs Devil Jin | 1–1 | 50.00% |
| Kacper 8979 vs Reina | 1–1 | 50.00% |
| Kacper 8979 vs Lidia | 0–2 | 0.00% |
| Kacper 8979 vs Anna | 2–0 | 100.00% |
| Kacper 8979 vs Xiaoyu | 0–1 | 0.00% |
| Kacper 8979 vs Lee | 1–0 | 100.00% |
| Kacper 8979 vs Panda | 1–0 | 100.00% |
| Kacper 8979 vs Zafina | 1–0 | 100.00% |
| Kacper 8979 vs Azucena | 0–1 | 0.00% |
| Kacper 8979 vs Raven | 0–1 | 0.00% |
| Kacper 8979 vs Heihachi | 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.