| Cowalsky vs Yoshimitsu | 10–12 | 45.45% |
| Cowalsky vs Jin | 7–5 | 58.33% |
| Cowalsky vs Eddy | 2–10 | 16.67% |
| Cowalsky vs Hwoarang | 4–6 | 40.00% |
| Cowalsky vs Kazuya | 2–8 | 20.00% |
| Cowalsky vs Bryan | 3–5 | 37.50% |
| Cowalsky vs Steve | 3–4 | 42.86% |
| Cowalsky vs Lidia | 4–3 | 57.14% |
| Cowalsky vs Clive | 2–5 | 28.57% |
| Cowalsky vs King | 3–3 | 50.00% |
| Cowalsky vs Xiaoyu | 4–2 | 66.67% |
| Cowalsky vs Dragunov | 3–3 | 50.00% |
| Cowalsky vs Law | 1–3 | 25.00% |
| Cowalsky vs Devil Jin | 1–3 | 25.00% |
| Cowalsky vs Feng | 0–4 | 0.00% |
| Cowalsky vs Jun | 2–2 | 50.00% |
| Cowalsky vs Reina | 2–2 | 50.00% |
| Cowalsky vs Lee | 2–1 | 66.67% |
| Cowalsky vs Anna | 1–2 | 33.33% |
| Cowalsky vs Fahkumram | 1–2 | 33.33% |
| Cowalsky vs Nina | 0–2 | 0.00% |
| Cowalsky vs Victor | 2–0 | 100.00% |
| Cowalsky vs Armor King | 0–2 | 0.00% |
| Cowalsky vs Lili | 0–1 | 0.00% |
| Cowalsky vs Lars | 0–1 | 0.00% |
| Cowalsky vs Kuma | 1–0 | 100.00% |
| Cowalsky vs Azucena | 1–0 | 100.00% |
| Cowalsky vs Heihachi | 1–0 | 100.00% |
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.