| Cowboi vs Jin | 176–166–1 | 51.46% |
| Cowboi vs Kazuya | 158–148 | 51.63% |
| Cowboi vs Reina | 143–155 | 47.99% |
| Cowboi vs Dragunov | 120–124 | 49.18% |
| Cowboi vs Bryan | 100–110 | 47.62% |
| Cowboi vs King | 92–102 | 47.42% |
| Cowboi vs Lili | 91–102–1 | 47.15% |
| Cowboi vs Paul | 69–81 | 46.00% |
| Cowboi vs Law | 51–93 | 35.42% |
| Cowboi vs Devil Jin | 68–76 | 47.22% |
| Cowboi vs Victor | 68–74 | 47.89% |
| Cowboi vs Hwoarang | 55–80 | 40.74% |
| Cowboi vs Yoshimitsu | 60–74 | 44.78% |
| Cowboi vs Steve | 66–66–1 | 50.00% |
| Cowboi vs Lee | 53–71 | 42.74% |
| Cowboi vs Feng | 38–81 | 31.93% |
| Cowboi vs Jun | 46–72 | 38.98% |
| Cowboi vs Asuka | 54–57 | 48.65% |
| Cowboi vs Azucena | 61–48 | 55.96% |
| Cowboi vs Lars | 45–54 | 45.45% |
| Cowboi vs Leroy | 43–51 | 45.74% |
| Cowboi vs Eddy | 26–56 | 31.71% |
| Cowboi vs Alisa | 26–52 | 33.33% |
| Cowboi vs Nina | 33–44 | 42.86% |
| Cowboi vs Xiaoyu | 35–40 | 46.67% |
| Cowboi vs Lidia | 33–35 | 48.53% |
| Cowboi vs Claudio | 24–38 | 38.71% |
| Cowboi vs Leo | 19–42 | 31.15% |
| Cowboi vs Shaheen | 22–35 | 38.60% |
| Cowboi vs Heihachi | 20–35–1 | 36.36% |
| Cowboi vs Jack-8 | 16–38 | 29.63% |
| Cowboi vs Zafina | 10–21 | 32.26% |
| Cowboi vs Raven | 11–18 | 37.93% |
| Cowboi vs Kuma | 11–14 | 44.00% |
| Cowboi vs Panda | 2–10 | 16.67% |
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.