| Viper vs Kazuya | 76–86 | 46.91% |
| Viper vs Jin | 80–75 | 51.61% |
| Viper vs King | 50–86 | 36.76% |
| Viper vs Steve | 71–51 | 58.20% |
| Viper vs Law | 58–52 | 52.73% |
| Viper vs Clive | 49–59 | 45.37% |
| Viper vs Hwoarang | 59–45 | 56.73% |
| Viper vs Reina | 58–46 | 55.77% |
| Viper vs Lili | 59–39 | 60.20% |
| Viper vs Dragunov | 42–51 | 45.16% |
| Viper vs Azucena | 36–48 | 42.86% |
| Viper vs Yoshimitsu | 36–39 | 48.00% |
| Viper vs Bryan | 35–38 | 47.95% |
| Viper vs Heihachi | 31–40 | 43.66% |
| Viper vs Asuka | 36–31 | 53.73% |
| Viper vs Nina | 32–24 | 57.14% |
| Viper vs Jun | 23–30 | 43.40% |
| Viper vs Eddy | 19–33 | 36.54% |
| Viper vs Paul | 18–30 | 37.50% |
| Viper vs Lars | 23–23 | 50.00% |
| Viper vs Lidia | 21–25 | 45.65% |
| Viper vs Victor | 16–29 | 35.56% |
| Viper vs Fahkumram | 19–26 | 42.22% |
| Viper vs Devil Jin | 23–20 | 53.49% |
| Viper vs Armor King | 15–27 | 35.71% |
| Viper vs Lee | 15–26 | 36.59% |
| Viper vs Alisa | 14–23 | 37.84% |
| Viper vs Feng | 16–20 | 44.44% |
| Viper vs Xiaoyu | 16–18 | 47.06% |
| Viper vs Claudio | 8–25 | 24.24% |
| Viper vs Miary Zo | 12–20 | 37.50% |
| Viper vs Leo | 15–15 | 50.00% |
| Viper vs Anna | 11–11 | 50.00% |
| Viper vs Zafina | 11–9 | 55.00% |
| Viper vs Raven | 13–7 | 65.00% |
| Viper vs Shaheen | 4–14 | 22.22% |
| Viper vs Jack-8 | 5–12 | 29.41% |
| Viper vs Leroy | 8–7 | 53.33% |
| Viper vs Kuma | 5–9 | 35.71% |
| Viper vs Panda | 2–6 | 25.00% |
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.