| Cowmouth vs Jin | 18–12 | 60.00% |
| Cowmouth vs Hwoarang | 17–9 | 65.38% |
| Cowmouth vs King | 11–10 | 52.38% |
| Cowmouth vs Eddy | 11–9 | 55.00% |
| Cowmouth vs Steve | 7–7 | 50.00% |
| Cowmouth vs Kazuya | 7–5 | 58.33% |
| Cowmouth vs Dragunov | 8–4 | 66.67% |
| Cowmouth vs Lee | 8–3 | 72.73% |
| Cowmouth vs Azucena | 5–6 | 45.45% |
| Cowmouth vs Lili | 6–4 | 60.00% |
| Cowmouth vs Law | 6–3 | 66.67% |
| Cowmouth vs Bryan | 3–6 | 33.33% |
| Cowmouth vs Zafina | 6–3 | 66.67% |
| Cowmouth vs Heihachi | 4–4 | 50.00% |
| Cowmouth vs Nina | 5–2 | 71.43% |
| Cowmouth vs Paul | 2–4 | 33.33% |
| Cowmouth vs Reina | 4–2 | 66.67% |
| Cowmouth vs Jack-8 | 1–4 | 20.00% |
| Cowmouth vs Feng | 4–1 | 80.00% |
| Cowmouth vs Leo | 2–3 | 40.00% |
| Cowmouth vs Yoshimitsu | 3–1 | 75.00% |
| Cowmouth vs Jun | 4–0 | 100.00% |
| Cowmouth vs Victor | 3–1 | 75.00% |
| Cowmouth vs Raven | 4–0 | 100.00% |
| Cowmouth vs Lidia | 3–0 | 100.00% |
| Cowmouth vs Panda | 2–0 | 100.00% |
| Cowmouth vs Anna | 0–2 | 0.00% |
| Cowmouth vs Devil Jin | 0–1 | 0.00% |
| Cowmouth vs Leroy | 1–0 | 100.00% |
| Cowmouth vs Clive | 0–1 | 0.00% |
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.