| sienna vs Reina | 189–168 | 52.94% |
| sienna vs Paul | 152–191 | 44.31% |
| sienna vs Kazuya | 166–153 | 52.04% |
| sienna vs Hwoarang | 129–168 | 43.43% |
| sienna vs King | 132–146 | 47.48% |
| sienna vs Dragunov | 96–161 | 37.35% |
| sienna vs Asuka | 121–113 | 51.71% |
| sienna vs Jin | 108–118 | 47.79% |
| sienna vs Bryan | 89–135 | 39.73% |
| sienna vs Lili | 88–118–1 | 42.72% |
| sienna vs Steve | 88–78 | 53.01% |
| sienna vs Yoshimitsu | 81–79 | 50.62% |
| sienna vs Victor | 70–85 | 45.16% |
| sienna vs Law | 65–89 | 42.21% |
| sienna vs Xiaoyu | 66–84 | 44.00% |
| sienna vs Jun | 71–75 | 48.63% |
| sienna vs Nina | 64–81 | 44.14% |
| sienna vs Feng | 55–63 | 46.61% |
| sienna vs Azucena | 48–66 | 42.11% |
| sienna vs Claudio | 35–74 | 32.11% |
| sienna vs Jack-8 | 46–62 | 42.59% |
| sienna vs Alisa | 40–66 | 37.74% |
| sienna vs Heihachi | 40–64 | 38.46% |
| sienna vs Lee | 45–53 | 45.92% |
| sienna vs Lars | 42–49 | 46.15% |
| sienna vs Leo | 29–56 | 34.12% |
| sienna vs Leroy | 31–52 | 37.35% |
| sienna vs Lidia | 39–44 | 46.99% |
| sienna vs Fahkumram | 36–41 | 46.75% |
| sienna vs Devil Jin | 29–41 | 41.43% |
| sienna vs Kuma | 25–40 | 38.46% |
| sienna vs Armor King | 21–44 | 32.31% |
| sienna vs Eddy | 21–41 | 33.87% |
| sienna vs Shaheen | 23–38 | 37.70% |
| sienna vs Clive | 18–42 | 30.00% |
| sienna vs Anna | 22–33 | 40.00% |
| sienna vs Raven | 20–32 | 38.46% |
| sienna vs Zafina | 15–28 | 34.88% |
| sienna vs Panda | 6–12 | 33.33% |
| sienna vs Miary Zo | 4–6 | 40.00% |
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.