| Castella vs Kazuya | 159–100 | 61.39% |
| Castella vs Bryan | 135–85 | 61.36% |
| Castella vs Paul | 117–64 | 64.64% |
| Castella vs Reina | 110–62 | 63.95% |
| Castella vs Clive | 104–60 | 63.41% |
| Castella vs Dragunov | 105–58 | 64.42% |
| Castella vs Jin | 94–58 | 61.84% |
| Castella vs Steve | 73–45 | 61.86% |
| Castella vs Heihachi | 70–46 | 60.34% |
| Castella vs Devil Jin | 52–63 | 45.22% |
| Castella vs Hwoarang | 62–52 | 54.39% |
| Castella vs King | 57–50 | 53.27% |
| Castella vs Asuka | 60–42 | 58.82% |
| Castella vs Victor | 50–44 | 53.19% |
| Castella vs Lili | 63–28 | 69.23% |
| Castella vs Law | 43–40 | 51.81% |
| Castella vs Feng | 46–36 | 56.10% |
| Castella vs Jun | 54–28 | 65.85% |
| Castella vs Azucena | 52–21 | 71.23% |
| Castella vs Yoshimitsu | 44–28 | 61.11% |
| Castella vs Lee | 34–37 | 47.89% |
| Castella vs Lars | 33–33 | 50.00% |
| Castella vs Claudio | 28–35 | 44.44% |
| Castella vs Nina | 38–18 | 67.86% |
| Castella vs Leroy | 27–26 | 50.94% |
| Castella vs Alisa | 25–27 | 48.08% |
| Castella vs Leo | 28–23 | 54.90% |
| Castella vs Eddy | 22–25 | 46.81% |
| Castella vs Xiaoyu | 27–18 | 60.00% |
| Castella vs Anna | 25–19 | 56.82% |
| Castella vs Jack-8 | 18–25 | 41.86% |
| Castella vs Shaheen | 19–22 | 46.34% |
| Castella vs Lidia | 23–15 | 60.53% |
| Castella vs Miary Zo | 25–13 | 65.79% |
| Castella vs Zafina | 12–22 | 35.29% |
| Castella vs Kuma | 21–9 | 70.00% |
| Castella vs Raven | 14–12 | 53.85% |
| Castella vs Fahkumram | 12–7 | 63.16% |
| Castella vs Panda | 8–9 | 47.06% |
| Castella vs Armor King | 6–11 | 35.29% |
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.