| Cowboi vs Jin | 284–263–1 | 51.92% |
| Cowboi vs Kazuya | 285–239 | 54.39% |
| Cowboi vs Reina | 210–230 | 47.73% |
| Cowboi vs Dragunov | 172–210 | 45.03% |
| Cowboi vs Bryan | 176–183 | 49.03% |
| Cowboi vs King | 174–177 | 49.57% |
| Cowboi vs Law | 109–159 | 40.67% |
| Cowboi vs Lili | 124–141–1 | 46.79% |
| Cowboi vs Yoshimitsu | 111–130 | 46.06% |
| Cowboi vs Hwoarang | 110–127 | 46.41% |
| Cowboi vs Steve | 113–119–1 | 48.71% |
| Cowboi vs Devil Jin | 115–112 | 50.66% |
| Cowboi vs Lee | 97–119–1 | 44.91% |
| Cowboi vs Paul | 102–108 | 48.57% |
| Cowboi vs Asuka | 88–100 | 46.81% |
| Cowboi vs Jun | 73–108 | 40.33% |
| Cowboi vs Victor | 84–95 | 46.93% |
| Cowboi vs Azucena | 90–78 | 53.57% |
| Cowboi vs Lars | 73–84 | 46.50% |
| Cowboi vs Feng | 59–97 | 37.82% |
| Cowboi vs Heihachi | 61–81–1 | 42.96% |
| Cowboi vs Xiaoyu | 65–76 | 46.10% |
| Cowboi vs Nina | 60–73 | 45.11% |
| Cowboi vs Alisa | 42–88 | 32.31% |
| Cowboi vs Leroy | 55–70 | 44.00% |
| Cowboi vs Leo | 42–72 | 36.84% |
| Cowboi vs Lidia | 52–62 | 45.61% |
| Cowboi vs Eddy | 34–77 | 30.63% |
| Cowboi vs Claudio | 42–67 | 38.53% |
| Cowboi vs Fahkumram | 36–65 | 35.64% |
| Cowboi vs Jack-8 | 20–58 | 25.64% |
| Cowboi vs Shaheen | 30–48 | 38.46% |
| Cowboi vs Armor King | 30–21 | 58.82% |
| Cowboi vs Zafina | 16–31 | 34.04% |
| Cowboi vs Raven | 16–29 | 35.56% |
| Cowboi vs Anna | 15–26 | 36.59% |
| Cowboi vs Kuma | 13–19 | 40.62% |
| Cowboi vs Clive | 6–18 | 25.00% |
| Cowboi vs Panda | 4–13 | 23.53% |
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.