| Mad Dog Rio vs King | 26–32 | 44.83% |
| Mad Dog Rio vs Jin | 19–38 | 33.33% |
| Mad Dog Rio vs Reina | 17–39 | 30.36% |
| Mad Dog Rio vs Yoshimitsu | 22–19 | 53.66% |
| Mad Dog Rio vs Eddy | 12–25 | 32.43% |
| Mad Dog Rio vs Lili | 12–24 | 33.33% |
| Mad Dog Rio vs Paul | 9–25 | 26.47% |
| Mad Dog Rio vs Steve | 12–22 | 35.29% |
| Mad Dog Rio vs Bryan | 15–18 | 45.45% |
| Mad Dog Rio vs Azucena | 12–20 | 37.50% |
| Mad Dog Rio vs Kazuya | 11–20 | 35.48% |
| Mad Dog Rio vs Hwoarang | 6–24 | 20.00% |
| Mad Dog Rio vs Jun | 11–19 | 36.67% |
| Mad Dog Rio vs Law | 8–20 | 28.57% |
| Mad Dog Rio vs Lee | 11–14 | 44.00% |
| Mad Dog Rio vs Asuka | 7–17 | 29.17% |
| Mad Dog Rio vs Victor | 8–16 | 33.33% |
| Mad Dog Rio vs Xiaoyu | 5–15 | 25.00% |
| Mad Dog Rio vs Leo | 5–14 | 26.32% |
| Mad Dog Rio vs Shaheen | 4–15 | 21.05% |
| Mad Dog Rio vs Dragunov | 4–14 | 22.22% |
| Mad Dog Rio vs Devil Jin | 2–15 | 11.76% |
| Mad Dog Rio vs Nina | 3–13 | 18.75% |
| Mad Dog Rio vs Alisa | 4–11 | 26.67% |
| Mad Dog Rio vs Zafina | 3–11 | 21.43% |
| Mad Dog Rio vs Lars | 7–6 | 53.85% |
| Mad Dog Rio vs Leroy | 5–7 | 41.67% |
| Mad Dog Rio vs Raven | 2–7 | 22.22% |
| Mad Dog Rio vs Kuma | 3–5 | 37.50% |
| Mad Dog Rio vs Jack-8 | 5–2 | 71.43% |
| Mad Dog Rio vs Heihachi | 1–6 | 14.29% |
| Mad Dog Rio vs Feng | 0–5 | 0.00% |
| Mad Dog Rio vs Claudio | 0–3 | 0.00% |
| Mad Dog Rio vs Panda | 0–2 | 0.00% |
| Mad Dog Rio vs Lidia | 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.