| Koskoski vs Kazuya | 220–219 | 50.11% |
| Koskoski vs Jin | 180–195 | 48.00% |
| Koskoski vs Bryan | 166–181 | 47.84% |
| Koskoski vs Reina | 136–119 | 53.33% |
| Koskoski vs Hwoarang | 99–146 | 40.41% |
| Koskoski vs King | 104–127 | 45.02% |
| Koskoski vs Dragunov | 111–111 | 50.00% |
| Koskoski vs Law | 111–110 | 50.23% |
| Koskoski vs Paul | 113–107 | 51.36% |
| Koskoski vs Steve | 113–95 | 54.33% |
| Koskoski vs Lili | 97–102 | 48.74% |
| Koskoski vs Yoshimitsu | 85–90 | 48.57% |
| Koskoski vs Heihachi | 92–80 | 53.49% |
| Koskoski vs Devil Jin | 84–87 | 49.12% |
| Koskoski vs Lars | 79–91 | 46.47% |
| Koskoski vs Lee | 84–79 | 51.53% |
| Koskoski vs Asuka | 74–77 | 49.01% |
| Koskoski vs Jun | 68–72 | 48.57% |
| Koskoski vs Feng | 64–60 | 51.61% |
| Koskoski vs Fahkumram | 58–64 | 47.54% |
| Koskoski vs Azucena | 53–65 | 44.92% |
| Koskoski vs Eddy | 56–60 | 48.28% |
| Koskoski vs Lidia | 51–60 | 45.95% |
| Koskoski vs Xiaoyu | 57–47 | 54.81% |
| Koskoski vs Victor | 56–44 | 56.00% |
| Koskoski vs Raven | 33–57 | 36.67% |
| Koskoski vs Nina | 38–48 | 44.19% |
| Koskoski vs Armor King | 30–47 | 38.96% |
| Koskoski vs Leo | 36–39 | 48.00% |
| Koskoski vs Alisa | 27–46 | 36.99% |
| Koskoski vs Leroy | 33–40 | 45.21% |
| Koskoski vs Jack-8 | 29–41 | 41.43% |
| Koskoski vs Kuma | 31–27 | 53.45% |
| Koskoski vs Anna | 30–27 | 52.63% |
| Koskoski vs Claudio | 23–33 | 41.07% |
| Koskoski vs Zafina | 26–16 | 61.90% |
| Koskoski vs Clive | 16–20 | 44.44% |
| Koskoski vs Shaheen | 16–18 | 47.06% |
| Koskoski vs Panda | 5–6 | 45.45% |
| Koskoski vs Miary Zo | 2–2 | 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.