| Kastroulkas vs Kazuya | 220–186 | 54.19% |
| Kastroulkas vs Jin | 194–178 | 52.15% |
| Kastroulkas vs Bryan | 188–157 | 54.49% |
| Kastroulkas vs Heihachi | 173–155–1 | 52.74% |
| Kastroulkas vs Hwoarang | 125–145 | 46.30% |
| Kastroulkas vs King | 132–131 | 50.19% |
| Kastroulkas vs Steve | 127–105–1 | 54.74% |
| Kastroulkas vs Dragunov | 105–118 | 47.09% |
| Kastroulkas vs Reina | 117–104–1 | 52.94% |
| Kastroulkas vs Yoshimitsu | 119–77 | 60.71% |
| Kastroulkas vs Paul | 98–92 | 51.58% |
| Kastroulkas vs Law | 87–94 | 48.07% |
| Kastroulkas vs Lee | 82–82 | 50.00% |
| Kastroulkas vs Lili | 87–72 | 54.72% |
| Kastroulkas vs Devil Jin | 63–86 | 42.28% |
| Kastroulkas vs Azucena | 69–68 | 50.36% |
| Kastroulkas vs Feng | 70–63 | 52.63% |
| Kastroulkas vs Armor King | 57–65 | 46.72% |
| Kastroulkas vs Jun | 71–50 | 58.68% |
| Kastroulkas vs Nina | 61–47 | 56.48% |
| Kastroulkas vs Victor | 51–57 | 47.22% |
| Kastroulkas vs Asuka | 45–59 | 43.27% |
| Kastroulkas vs Lidia | 45–59 | 43.27% |
| Kastroulkas vs Leroy | 68–29 | 70.10% |
| Kastroulkas vs Clive | 48–49 | 49.48% |
| Kastroulkas vs Xiaoyu | 33–58 | 36.26% |
| Kastroulkas vs Lars | 51–39 | 56.67% |
| Kastroulkas vs Eddy | 38–49 | 43.68% |
| Kastroulkas vs Claudio | 41–44 | 48.24% |
| Kastroulkas vs Alisa | 60–21 | 74.07% |
| Kastroulkas vs Jack-8 | 39–37 | 51.32% |
| Kastroulkas vs Leo | 32–43 | 42.67% |
| Kastroulkas vs Raven | 32–42 | 43.24% |
| Kastroulkas vs Fahkumram | 27–30 | 47.37% |
| Kastroulkas vs Zafina | 27–21 | 56.25% |
| Kastroulkas vs Kuma | 19–24 | 44.19% |
| Kastroulkas vs Anna | 18–25 | 41.86% |
| Kastroulkas vs Shaheen | 19–19 | 50.00% |
| Kastroulkas vs Panda | 8–11 | 42.11% |
| Kastroulkas vs Miary Zo | 4–5 | 44.44% |
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.