| Kostas Skywalkr vs Jin | 93–100 | 48.19% |
| Kostas Skywalkr vs Kazuya | 71–95 | 42.77% |
| Kostas Skywalkr vs Law | 81–59 | 57.86% |
| Kostas Skywalkr vs King | 56–78 | 41.79% |
| Kostas Skywalkr vs Steve | 72–60 | 54.55% |
| Kostas Skywalkr vs Bryan | 45–59 | 43.27% |
| Kostas Skywalkr vs Armor King | 42–57 | 42.42% |
| Kostas Skywalkr vs Heihachi | 38–51 | 42.70% |
| Kostas Skywalkr vs Hwoarang | 38–46 | 45.24% |
| Kostas Skywalkr vs Reina | 48–36 | 57.14% |
| Kostas Skywalkr vs Lili | 37–46 | 44.58% |
| Kostas Skywalkr vs Paul | 31–43 | 41.89% |
| Kostas Skywalkr vs Yoshimitsu | 32–38 | 45.71% |
| Kostas Skywalkr vs Eddy | 25–43 | 36.76% |
| Kostas Skywalkr vs Dragunov | 36–30 | 54.55% |
| Kostas Skywalkr vs Fahkumram | 39–26 | 60.00% |
| Kostas Skywalkr vs Jun | 17–35 | 32.69% |
| Kostas Skywalkr vs Lee | 23–25 | 47.92% |
| Kostas Skywalkr vs Asuka | 25–22 | 53.19% |
| Kostas Skywalkr vs Devil Jin | 19–27 | 41.30% |
| Kostas Skywalkr vs Feng | 20–20 | 50.00% |
| Kostas Skywalkr vs Miary Zo | 16–24 | 40.00% |
| Kostas Skywalkr vs Alisa | 19–19 | 50.00% |
| Kostas Skywalkr vs Azucena | 14–22 | 38.89% |
| Kostas Skywalkr vs Nina | 15–20 | 42.86% |
| Kostas Skywalkr vs Clive | 14–21 | 40.00% |
| Kostas Skywalkr vs Victor | 16–17 | 48.48% |
| Kostas Skywalkr vs Lars | 16–16 | 50.00% |
| Kostas Skywalkr vs Lidia | 12–14 | 46.15% |
| Kostas Skywalkr vs Leo | 9–16 | 36.00% |
| Kostas Skywalkr vs Xiaoyu | 11–13 | 45.83% |
| Kostas Skywalkr vs Claudio | 9–15 | 37.50% |
| Kostas Skywalkr vs Raven | 9–14 | 39.13% |
| Kostas Skywalkr vs Anna | 12–11 | 52.17% |
| Kostas Skywalkr vs Leroy | 8–12 | 40.00% |
| Kostas Skywalkr vs Kuma | 10–9 | 52.63% |
| Kostas Skywalkr vs Zafina | 4–11 | 26.67% |
| Kostas Skywalkr vs Jack-8 | 6–8 | 42.86% |
| Kostas Skywalkr vs Shaheen | 7–5 | 58.33% |
| Kostas Skywalkr vs Panda | 4–8 | 33.33% |
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.