| KayCee21 vs King | 12–16 | 42.86% |
| KayCee21 vs Steve | 10–16 | 38.46% |
| KayCee21 vs Reina | 13–12 | 52.00% |
| KayCee21 vs Bryan | 6–15 | 28.57% |
| KayCee21 vs Hwoarang | 7–13 | 35.00% |
| KayCee21 vs Kazuya | 3–11 | 21.43% |
| KayCee21 vs Yoshimitsu | 7–6 | 53.85% |
| KayCee21 vs Asuka | 5–8 | 38.46% |
| KayCee21 vs Lili | 4–9 | 30.77% |
| KayCee21 vs Victor | 7–6 | 53.85% |
| KayCee21 vs Jack-8 | 4–8 | 33.33% |
| KayCee21 vs Eddy | 7–4 | 63.64% |
| KayCee21 vs Dragunov | 5–5 | 50.00% |
| KayCee21 vs Devil Jin | 4–4 | 50.00% |
| KayCee21 vs Jun | 2–6 | 25.00% |
| KayCee21 vs Law | 1–6 | 14.29% |
| KayCee21 vs Jin | 5–2 | 71.43% |
| KayCee21 vs Leo | 3–4 | 42.86% |
| KayCee21 vs Kuma | 3–4 | 42.86% |
| KayCee21 vs Lidia | 3–4 | 42.86% |
| KayCee21 vs Paul | 4–2 | 66.67% |
| KayCee21 vs Lars | 0–6 | 0.00% |
| KayCee21 vs Claudio | 1–5 | 16.67% |
| KayCee21 vs Azucena | 2–4 | 33.33% |
| KayCee21 vs Nina | 3–2 | 60.00% |
| KayCee21 vs Xiaoyu | 4–0 | 100.00% |
| KayCee21 vs Lee | 1–3 | 25.00% |
| KayCee21 vs Leroy | 2–2 | 50.00% |
| KayCee21 vs Feng | 3–0 | 100.00% |
| KayCee21 vs Alisa | 1–2 | 33.33% |
| KayCee21 vs Panda | 2–0 | 100.00% |
| KayCee21 vs Zafina | 2–0 | 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.