| killer-v21 vs King | 28–34 | 45.16% |
| killer-v21 vs Kazuya | 13–16 | 44.83% |
| killer-v21 vs Steve | 15–8 | 65.22% |
| killer-v21 vs Jin | 7–15 | 31.82% |
| killer-v21 vs Reina | 9–13 | 40.91% |
| killer-v21 vs Hwoarang | 9–9 | 50.00% |
| killer-v21 vs Asuka | 7–11 | 38.89% |
| killer-v21 vs Bryan | 9–8 | 52.94% |
| killer-v21 vs Yoshimitsu | 6–10 | 37.50% |
| killer-v21 vs Dragunov | 8–7 | 53.33% |
| killer-v21 vs Xiaoyu | 7–7 | 50.00% |
| killer-v21 vs Lee | 7–7 | 50.00% |
| killer-v21 vs Lidia | 8–6 | 57.14% |
| killer-v21 vs Azucena | 10–3 | 76.92% |
| killer-v21 vs Paul | 4–8 | 33.33% |
| killer-v21 vs Jun | 5–7 | 41.67% |
| killer-v21 vs Lili | 5–5 | 50.00% |
| killer-v21 vs Victor | 7–3 | 70.00% |
| killer-v21 vs Eddy | 3–7 | 30.00% |
| killer-v21 vs Law | 5–4 | 55.56% |
| killer-v21 vs Jack-8 | 5–4 | 55.56% |
| killer-v21 vs Leroy | 3–5 | 37.50% |
| killer-v21 vs Clive | 5–3 | 62.50% |
| killer-v21 vs Lars | 1–6 | 14.29% |
| killer-v21 vs Devil Jin | 6–0 | 100.00% |
| killer-v21 vs Leo | 2–4 | 33.33% |
| killer-v21 vs Shaheen | 3–3 | 50.00% |
| killer-v21 vs Nina | 3–3 | 50.00% |
| killer-v21 vs Kuma | 3–3 | 50.00% |
| killer-v21 vs Heihachi | 0–6 | 0.00% |
| killer-v21 vs Anna | 4–2 | 66.67% |
| killer-v21 vs Raven | 2–3 | 40.00% |
| killer-v21 vs Feng | 2–2 | 50.00% |
| killer-v21 vs Zafina | 2–2 | 50.00% |
| killer-v21 vs Claudio | 0–3 | 0.00% |
| killer-v21 vs Panda | 0–2 | 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.