| RRCOWBOY64 vs Reina | 77–105 | 42.31% |
| RRCOWBOY64 vs King | 58–91 | 38.93% |
| RRCOWBOY64 vs Steve | 39–87 | 30.95% |
| RRCOWBOY64 vs Kazuya | 36–88 | 29.03% |
| RRCOWBOY64 vs Bryan | 29–89 | 24.58% |
| RRCOWBOY64 vs Heihachi | 26–73 | 26.26% |
| RRCOWBOY64 vs Dragunov | 27–67 | 28.72% |
| RRCOWBOY64 vs Clive | 23–65 | 26.14% |
| RRCOWBOY64 vs Jin | 17–70 | 19.54% |
| RRCOWBOY64 vs Jun | 30–51 | 37.04% |
| RRCOWBOY64 vs Law | 17–61 | 21.79% |
| RRCOWBOY64 vs Lili | 20–58 | 25.64% |
| RRCOWBOY64 vs Hwoarang | 29–46 | 38.67% |
| RRCOWBOY64 vs Yoshimitsu | 20–40 | 33.33% |
| RRCOWBOY64 vs Anna | 25–35 | 41.67% |
| RRCOWBOY64 vs Eddy | 13–43 | 23.21% |
| RRCOWBOY64 vs Lee | 12–40 | 23.08% |
| RRCOWBOY64 vs Victor | 12–39 | 23.53% |
| RRCOWBOY64 vs Leo | 16–32 | 33.33% |
| RRCOWBOY64 vs Lidia | 14–34 | 29.17% |
| RRCOWBOY64 vs Leroy | 17–30 | 36.17% |
| RRCOWBOY64 vs Asuka | 10–36 | 21.74% |
| RRCOWBOY64 vs Lars | 11–34 | 24.44% |
| RRCOWBOY64 vs Nina | 13–32 | 28.89% |
| RRCOWBOY64 vs Azucena | 16–29 | 35.56% |
| RRCOWBOY64 vs Devil Jin | 14–26 | 35.00% |
| RRCOWBOY64 vs Paul | 11–27 | 28.95% |
| RRCOWBOY64 vs Xiaoyu | 8–30 | 21.05% |
| RRCOWBOY64 vs Jack-8 | 10–28 | 26.32% |
| RRCOWBOY64 vs Alisa | 5–30 | 14.29% |
| RRCOWBOY64 vs Claudio | 10–25 | 28.57% |
| RRCOWBOY64 vs Feng | 7–23 | 23.33% |
| RRCOWBOY64 vs Shaheen | 16–13 | 55.17% |
| RRCOWBOY64 vs Zafina | 4–22 | 15.38% |
| RRCOWBOY64 vs Raven | 10–16 | 38.46% |
| RRCOWBOY64 vs Fahkumram | 2–14 | 12.50% |
| RRCOWBOY64 vs Kuma | 3–12 | 20.00% |
| RRCOWBOY64 vs Panda | 0–5 | 0.00% |
| RRCOWBOY64 vs Miary Zo | 2–2 | 50.00% |
| RRCOWBOY64 vs Armor King | 1–2 | 33.33% |
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.