| Kay215 vs King | 32–28 | 53.33% |
| Kay215 vs Eddy | 26–25 | 50.98% |
| Kay215 vs Kazuya | 29–14 | 67.44% |
| Kay215 vs Jun | 24–9 | 72.73% |
| Kay215 vs Reina | 25–8 | 75.76% |
| Kay215 vs Hwoarang | 22–9 | 70.97% |
| Kay215 vs Lidia | 16–15 | 51.61% |
| Kay215 vs Lee | 15–13 | 53.57% |
| Kay215 vs Steve | 16–11 | 59.26% |
| Kay215 vs Dragunov | 15–11 | 57.69% |
| Kay215 vs Law | 18–7 | 72.00% |
| Kay215 vs Yoshimitsu | 14–9 | 60.87% |
| Kay215 vs Bryan | 16–7 | 69.57% |
| Kay215 vs Asuka | 13–8 | 61.90% |
| Kay215 vs Lars | 12–9 | 57.14% |
| Kay215 vs Jin | 12–7 | 63.16% |
| Kay215 vs Azucena | 14–4 | 77.78% |
| Kay215 vs Nina | 8–9 | 47.06% |
| Kay215 vs Paul | 8–8 | 50.00% |
| Kay215 vs Lili | 12–4 | 75.00% |
| Kay215 vs Xiaoyu | 13–2 | 86.67% |
| Kay215 vs Leo | 7–8 | 46.67% |
| Kay215 vs Alisa | 10–5 | 66.67% |
| Kay215 vs Victor | 9–5 | 64.29% |
| Kay215 vs Feng | 6–6 | 50.00% |
| Kay215 vs Jack-8 | 7–4 | 63.64% |
| Kay215 vs Heihachi | 5–5 | 50.00% |
| Kay215 vs Devil Jin | 5–4 | 55.56% |
| Kay215 vs Claudio | 6–2 | 75.00% |
| Kay215 vs Kuma | 4–4 | 50.00% |
| Kay215 vs Panda | 4–1 | 80.00% |
| Kay215 vs Leroy | 4–1 | 80.00% |
| Kay215 vs Raven | 3–2 | 60.00% |
| Kay215 vs Fahkumram | 3–1 | 75.00% |
| Kay215 vs Shaheen | 2–1 | 66.67% |
| Kay215 vs Zafina | 0–3 | 0.00% |
| Kay215 vs Miary Zo | 1–2 | 33.33% |
| Kay215 vs Clive | 2–0 | 100.00% |
| Kay215 vs Anna | 1–1 | 50.00% |
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.