| Siren vs Reina | 18–13 | 58.06% |
| Siren vs Kazuya | 12–10 | 54.55% |
| Siren vs Yoshimitsu | 9–8 | 52.94% |
| Siren vs Hwoarang | 8–9 | 47.06% |
| Siren vs Jin | 6–11 | 35.29% |
| Siren vs Bryan | 9–7 | 56.25% |
| Siren vs Feng | 8–7 | 53.33% |
| Siren vs Paul | 3–11 | 21.43% |
| Siren vs King | 7–5 | 58.33% |
| Siren vs Eddy | 7–5 | 58.33% |
| Siren vs Law | 7–4 | 63.64% |
| Siren vs Nina | 6–5 | 54.55% |
| Siren vs Dragunov | 2–7 | 22.22% |
| Siren vs Raven | 6–3 | 66.67% |
| Siren vs Xiaoyu | 4–4 | 50.00% |
| Siren vs Lili | 4–4 | 50.00% |
| Siren vs Steve | 3–4 | 42.86% |
| Siren vs Jun | 3–4 | 42.86% |
| Siren vs Azucena | 0–7 | 0.00% |
| Siren vs Lee | 5–1 | 83.33% |
| Siren vs Kuma | 2–4 | 33.33% |
| Siren vs Asuka | 2–3 | 40.00% |
| Siren vs Devil Jin | 1–4 | 20.00% |
| Siren vs Leo | 4–1 | 80.00% |
| Siren vs Lars | 3–2 | 60.00% |
| Siren vs Zafina | 1–4 | 20.00% |
| Siren vs Jack-8 | 1–3 | 25.00% |
| Siren vs Victor | 2–2 | 50.00% |
| Siren vs Leroy | 2–1 | 66.67% |
| Siren vs Claudio | 0–2 | 0.00% |
| Siren vs Panda | 2–0 | 100.00% |
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.