| Castle vs King | 27–47 | 36.49% |
| Castle vs Jin | 27–40 | 40.30% |
| Castle vs Reina | 23–32 | 41.82% |
| Castle vs Eddy | 20–34 | 37.04% |
| Castle vs Lili | 20–29 | 40.82% |
| Castle vs Victor | 11–29 | 27.50% |
| Castle vs Law | 16–23 | 41.03% |
| Castle vs Hwoarang | 23–16 | 58.97% |
| Castle vs Yoshimitsu | 18–20 | 47.37% |
| Castle vs Nina | 17–19 | 47.22% |
| Castle vs Bryan | 15–20 | 42.86% |
| Castle vs Kazuya | 9–24 | 27.27% |
| Castle vs Steve | 14–19 | 42.42% |
| Castle vs Azucena | 14–17 | 45.16% |
| Castle vs Jun | 12–17 | 41.38% |
| Castle vs Raven | 8–20 | 28.57% |
| Castle vs Asuka | 10–17 | 37.04% |
| Castle vs Xiaoyu | 5–20 | 20.00% |
| Castle vs Paul | 12–12 | 50.00% |
| Castle vs Dragunov | 11–13 | 45.83% |
| Castle vs Feng | 9–12 | 42.86% |
| Castle vs Lars | 5–16 | 23.81% |
| Castle vs Lee | 11–10 | 52.38% |
| Castle vs Kuma | 4–16 | 20.00% |
| Castle vs Jack-8 | 5–14 | 26.32% |
| Castle vs Alisa | 10–8 | 55.56% |
| Castle vs Claudio | 6–10 | 37.50% |
| Castle vs Devil Jin | 3–11 | 21.43% |
| Castle vs Zafina | 2–12 | 14.29% |
| Castle vs Leroy | 4–7 | 36.36% |
| Castle vs Leo | 4–6 | 40.00% |
| Castle vs Shaheen | 3–3 | 50.00% |
| Castle vs Panda | 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.