| KingKayJ vs King | 59–82 | 41.84% |
| KingKayJ vs Jin | 43–67 | 39.09% |
| KingKayJ vs Eddy | 44–64 | 40.74% |
| KingKayJ vs Kazuya | 47–60 | 43.93% |
| KingKayJ vs Hwoarang | 51–51 | 50.00% |
| KingKayJ vs Reina | 44–45 | 49.44% |
| KingKayJ vs Dragunov | 33–41 | 44.59% |
| KingKayJ vs Bryan | 38–33 | 53.52% |
| KingKayJ vs Jun | 35–32 | 52.24% |
| KingKayJ vs Law | 21–43 | 32.81% |
| KingKayJ vs Azucena | 29–35 | 45.31% |
| KingKayJ vs Leo | 32–29 | 52.46% |
| KingKayJ vs Lili | 29–26 | 52.73% |
| KingKayJ vs Lars | 18–36 | 33.33% |
| KingKayJ vs Steve | 28–22 | 56.00% |
| KingKayJ vs Victor | 13–36 | 26.53% |
| KingKayJ vs Yoshimitsu | 22–25–1 | 46.81% |
| KingKayJ vs Paul | 21–25 | 45.65% |
| KingKayJ vs Leroy | 18–28 | 39.13% |
| KingKayJ vs Asuka | 17–23 | 42.50% |
| KingKayJ vs Devil Jin | 15–25 | 37.50% |
| KingKayJ vs Lee | 15–22 | 40.54% |
| KingKayJ vs Nina | 12–24 | 33.33% |
| KingKayJ vs Feng | 14–21 | 40.00% |
| KingKayJ vs Xiaoyu | 15–16 | 48.39% |
| KingKayJ vs Alisa | 11–18 | 37.93% |
| KingKayJ vs Jack-8 | 8–18 | 30.77% |
| KingKayJ vs Raven | 11–12 | 47.83% |
| KingKayJ vs Kuma | 7–15 | 31.82% |
| KingKayJ vs Shaheen | 10–7 | 58.82% |
| KingKayJ vs Clive | 2–14 | 12.50% |
| KingKayJ vs Claudio | 9–4 | 69.23% |
| KingKayJ vs Zafina | 6–4 | 60.00% |
| KingKayJ vs Armor King | 7–3 | 70.00% |
| KingKayJ vs Miary Zo | 5–5 | 50.00% |
| KingKayJ vs Lidia | 5–3 | 62.50% |
| KingKayJ vs Anna | 1–4 | 20.00% |
| KingKayJ vs Panda | 0–2 | 0.00% |
| KingKayJ vs Heihachi | 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.