| J-KeyR vs King | 45–50 | 47.37% |
| J-KeyR vs Kazuya | 38–45 | 45.78% |
| J-KeyR vs Reina | 25–57 | 30.49% |
| J-KeyR vs Steve | 32–45 | 41.56% |
| J-KeyR vs Jin | 25–47 | 34.72% |
| J-KeyR vs Law | 28–39 | 41.79% |
| J-KeyR vs Bryan | 23–40 | 36.51% |
| J-KeyR vs Hwoarang | 33–15 | 68.75% |
| J-KeyR vs Heihachi | 15–29 | 34.09% |
| J-KeyR vs Devil Jin | 16–25 | 39.02% |
| J-KeyR vs Paul | 16–23 | 41.03% |
| J-KeyR vs Jun | 16–18 | 47.06% |
| J-KeyR vs Yoshimitsu | 14–19 | 42.42% |
| J-KeyR vs Dragunov | 14–18 | 43.75% |
| J-KeyR vs Azucena | 12–19 | 38.71% |
| J-KeyR vs Nina | 10–20 | 33.33% |
| J-KeyR vs Lili | 13–16 | 44.83% |
| J-KeyR vs Victor | 13–15 | 46.43% |
| J-KeyR vs Clive | 13–15 | 46.43% |
| J-KeyR vs Fahkumram | 12–16 | 42.86% |
| J-KeyR vs Alisa | 10–17 | 37.04% |
| J-KeyR vs Lee | 9–16 | 36.00% |
| J-KeyR vs Eddy | 12–13 | 48.00% |
| J-KeyR vs Asuka | 10–9 | 52.63% |
| J-KeyR vs Xiaoyu | 13–5 | 72.22% |
| J-KeyR vs Miary Zo | 5–13 | 27.78% |
| J-KeyR vs Jack-8 | 8–9 | 47.06% |
| J-KeyR vs Feng | 4–13 | 23.53% |
| J-KeyR vs Lars | 7–10 | 41.18% |
| J-KeyR vs Leroy | 8–8 | 50.00% |
| J-KeyR vs Lidia | 8–7 | 53.33% |
| J-KeyR vs Leo | 7–6 | 53.85% |
| J-KeyR vs Raven | 8–5 | 61.54% |
| J-KeyR vs Armor King | 8–5 | 61.54% |
| J-KeyR vs Shaheen | 4–5 | 44.44% |
| J-KeyR vs Kuma | 6–3 | 66.67% |
| J-KeyR vs Anna | 5–3 | 62.50% |
| J-KeyR vs Claudio | 2–4 | 33.33% |
| J-KeyR vs Panda | 0–2 | 0.00% |
| J-KeyR vs Zafina | 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.