| Ruddy vs Kazuya | 107–103 | 50.95% |
| Ruddy vs Jin | 92–116 | 44.23% |
| Ruddy vs Hwoarang | 104–78 | 57.14% |
| Ruddy vs Bryan | 81–81 | 50.00% |
| Ruddy vs Reina | 85–63 | 57.43% |
| Ruddy vs Law | 59–67 | 46.83% |
| Ruddy vs Yoshimitsu | 52–67 | 43.70% |
| Ruddy vs Dragunov | 67–52 | 56.30% |
| Ruddy vs Steve | 57–58 | 49.57% |
| Ruddy vs Paul | 51–60 | 45.95% |
| Ruddy vs King | 45–62 | 42.06% |
| Ruddy vs Lee | 41–62 | 39.81% |
| Ruddy vs Lili | 42–52 | 44.68% |
| Ruddy vs Devil Jin | 54–35 | 60.67% |
| Ruddy vs Victor | 37–51 | 42.05% |
| Ruddy vs Feng | 40–46 | 46.51% |
| Ruddy vs Jun | 45–38 | 54.22% |
| Ruddy vs Nina | 34–48 | 41.46% |
| Ruddy vs Raven | 31–47 | 39.74% |
| Ruddy vs Asuka | 39–35 | 52.70% |
| Ruddy vs Lars | 19–46 | 29.23% |
| Ruddy vs Xiaoyu | 28–32 | 46.67% |
| Ruddy vs Azucena | 24–29 | 45.28% |
| Ruddy vs Jack-8 | 20–28 | 41.67% |
| Ruddy vs Eddy | 11–36 | 23.40% |
| Ruddy vs Leo | 19–27 | 41.30% |
| Ruddy vs Kuma | 17–28 | 37.78% |
| Ruddy vs Alisa | 18–26 | 40.91% |
| Ruddy vs Shaheen | 15–28 | 34.88% |
| Ruddy vs Leroy | 21–22 | 48.84% |
| Ruddy vs Claudio | 20–18 | 52.63% |
| Ruddy vs Zafina | 22–11 | 66.67% |
| Ruddy vs Heihachi | 12–10 | 54.55% |
| Ruddy vs Panda | 8–9 | 47.06% |
| Ruddy vs Lidia | 8–7 | 53.33% |
| Ruddy vs Clive | 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.