| Koskoski vs Kazuya | 129–125 | 50.79% |
| Koskoski vs Jin | 102–110 | 48.11% |
| Koskoski vs Bryan | 88–102 | 46.32% |
| Koskoski vs Reina | 74–72 | 50.68% |
| Koskoski vs King | 56–79 | 41.48% |
| Koskoski vs Law | 68–58 | 53.97% |
| Koskoski vs Steve | 73–53 | 57.94% |
| Koskoski vs Hwoarang | 49–75 | 39.52% |
| Koskoski vs Yoshimitsu | 58–65 | 47.15% |
| Koskoski vs Dragunov | 57–60 | 48.72% |
| Koskoski vs Lili | 52–57 | 47.71% |
| Koskoski vs Paul | 48–59 | 44.86% |
| Koskoski vs Devil Jin | 49–48 | 50.52% |
| Koskoski vs Lars | 42–49 | 46.15% |
| Koskoski vs Lee | 44–44 | 50.00% |
| Koskoski vs Eddy | 44–40 | 52.38% |
| Koskoski vs Jun | 39–41 | 48.75% |
| Koskoski vs Asuka | 35–39 | 47.30% |
| Koskoski vs Feng | 35–35 | 50.00% |
| Koskoski vs Azucena | 31–37 | 45.59% |
| Koskoski vs Xiaoyu | 35–30 | 53.85% |
| Koskoski vs Victor | 29–34 | 46.03% |
| Koskoski vs Lidia | 20–39 | 33.90% |
| Koskoski vs Nina | 19–33 | 36.54% |
| Koskoski vs Leroy | 24–24 | 50.00% |
| Koskoski vs Raven | 19–27 | 41.30% |
| Koskoski vs Kuma | 20–18 | 52.63% |
| Koskoski vs Jack-8 | 12–25 | 32.43% |
| Koskoski vs Leo | 15–21 | 41.67% |
| Koskoski vs Alisa | 13–22 | 37.14% |
| Koskoski vs Claudio | 13–21 | 38.24% |
| Koskoski vs Zafina | 12–10 | 54.55% |
| Koskoski vs Shaheen | 10–9 | 52.63% |
| Koskoski vs Heihachi | 8–6 | 57.14% |
| Koskoski vs Panda | 4–4 | 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.