| Rumianek vs Kazuya | 215–227 | 48.64% |
| Rumianek vs Jin | 176–224 | 44.00% |
| Rumianek vs Hwoarang | 142–164 | 46.41% |
| Rumianek vs Reina | 141–155 | 47.64% |
| Rumianek vs Bryan | 137–152 | 47.40% |
| Rumianek vs King | 105–151 | 41.02% |
| Rumianek vs Dragunov | 96–135 | 41.56% |
| Rumianek vs Lili | 101–104 | 49.27% |
| Rumianek vs Steve | 91–112 | 44.83% |
| Rumianek vs Yoshimitsu | 87–106 | 45.08% |
| Rumianek vs Law | 92–86 | 51.69% |
| Rumianek vs Paul | 86–89 | 49.14% |
| Rumianek vs Heihachi | 68–101 | 40.24% |
| Rumianek vs Devil Jin | 80–79 | 50.31% |
| Rumianek vs Lee | 63–91 | 40.91% |
| Rumianek vs Asuka | 63–80 | 44.06% |
| Rumianek vs Jun | 67–66 | 50.38% |
| Rumianek vs Azucena | 65–58 | 52.85% |
| Rumianek vs Lars | 49–72 | 40.50% |
| Rumianek vs Victor | 51–67 | 43.22% |
| Rumianek vs Xiaoyu | 76–39 | 66.09% |
| Rumianek vs Nina | 58–57 | 50.43% |
| Rumianek vs Lidia | 48–64 | 42.86% |
| Rumianek vs Feng | 47–61 | 43.52% |
| Rumianek vs Alisa | 43–62 | 40.95% |
| Rumianek vs Eddy | 50–49 | 50.51% |
| Rumianek vs Claudio | 34–55 | 38.20% |
| Rumianek vs Leroy | 39–35 | 52.70% |
| Rumianek vs Leo | 28–45 | 38.36% |
| Rumianek vs Raven | 28–41 | 40.58% |
| Rumianek vs Jack-8 | 31–37 | 45.59% |
| Rumianek vs Kuma | 24–40 | 37.50% |
| Rumianek vs Clive | 28–21 | 57.14% |
| Rumianek vs Shaheen | 24–20 | 54.55% |
| Rumianek vs Zafina | 21–20 | 51.22% |
| Rumianek vs Panda | 4–8 | 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.