| Castoir vs Jin | 32–28 | 53.33% |
| Castoir vs Steve | 26–25 | 50.98% |
| Castoir vs Kazuya | 27–23 | 54.00% |
| Castoir vs Dragunov | 23–26 | 46.94% |
| Castoir vs Reina | 23–21 | 52.27% |
| Castoir vs Victor | 17–17 | 50.00% |
| Castoir vs Bryan | 18–15 | 54.55% |
| Castoir vs Armor King | 17–15 | 53.12% |
| Castoir vs Asuka | 10–18 | 35.71% |
| Castoir vs Hwoarang | 12–13 | 48.00% |
| Castoir vs Jun | 7–17 | 29.17% |
| Castoir vs King | 9–14 | 39.13% |
| Castoir vs Feng | 13–9 | 59.09% |
| Castoir vs Lili | 7–15 | 31.82% |
| Castoir vs Leo | 14–7 | 66.67% |
| Castoir vs Law | 7–13 | 35.00% |
| Castoir vs Miary Zo | 7–13 | 35.00% |
| Castoir vs Lars | 8–11 | 42.11% |
| Castoir vs Azucena | 10–9 | 52.63% |
| Castoir vs Heihachi | 9–9 | 50.00% |
| Castoir vs Clive | 11–7 | 61.11% |
| Castoir vs Lee | 11–6 | 64.71% |
| Castoir vs Paul | 7–9 | 43.75% |
| Castoir vs Yoshimitsu | 13–3 | 81.25% |
| Castoir vs Devil Jin | 6–10 | 37.50% |
| Castoir vs Xiaoyu | 8–6 | 57.14% |
| Castoir vs Claudio | 8–6 | 57.14% |
| Castoir vs Kuma | 7–5 | 58.33% |
| Castoir vs Lidia | 4–8 | 33.33% |
| Castoir vs Shaheen | 7–4 | 63.64% |
| Castoir vs Nina | 2–8 | 20.00% |
| Castoir vs Eddy | 6–4 | 60.00% |
| Castoir vs Leroy | 5–4 | 55.56% |
| Castoir vs Raven | 1–6 | 14.29% |
| Castoir vs Zafina | 4–2 | 66.67% |
| Castoir vs Fahkumram | 4–1 | 80.00% |
| Castoir vs Anna | 1–3 | 25.00% |
| Castoir vs Jack-8 | 2–0 | 100.00% |
| Castoir vs Alisa | 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.