| Siren vs King | 58–56 | 50.88% |
| Siren vs Kazuya | 56–58 | 49.12% |
| Siren vs Jin | 65–45 | 59.09% |
| Siren vs Bryan | 52–48 | 52.00% |
| Siren vs Dragunov | 51–45 | 53.12% |
| Siren vs Reina | 46–39 | 54.12% |
| Siren vs Hwoarang | 31–42 | 42.47% |
| Siren vs Steve | 35–32 | 52.24% |
| Siren vs Lili | 30–35 | 46.15% |
| Siren vs Law | 20–43 | 31.75% |
| Siren vs Yoshimitsu | 25–31 | 44.64% |
| Siren vs Jun | 26–25 | 50.98% |
| Siren vs Paul | 19–27 | 41.30% |
| Siren vs Asuka | 18–25 | 41.86% |
| Siren vs Heihachi | 16–27 | 37.21% |
| Siren vs Claudio | 34–8 | 80.95% |
| Siren vs Eddy | 20–19 | 51.28% |
| Siren vs Lars | 14–24 | 36.84% |
| Siren vs Nina | 18–20 | 47.37% |
| Siren vs Azucena | 20–15 | 57.14% |
| Siren vs Devil Jin | 16–16 | 50.00% |
| Siren vs Victor | 14–16 | 46.67% |
| Siren vs Alisa | 15–14 | 51.72% |
| Siren vs Lee | 14–15 | 48.28% |
| Siren vs Leo | 13–15 | 46.43% |
| Siren vs Xiaoyu | 11–15 | 42.31% |
| Siren vs Jack-8 | 17–9 | 65.38% |
| Siren vs Fahkumram | 13–12 | 52.00% |
| Siren vs Kuma | 11–13 | 45.83% |
| Siren vs Lidia | 10–8 | 55.56% |
| Siren vs Leroy | 13–4 | 76.47% |
| Siren vs Raven | 8–9 | 47.06% |
| Siren vs Zafina | 8–7 | 53.33% |
| Siren vs Feng | 5–8 | 38.46% |
| Siren vs Clive | 8–5 | 61.54% |
| Siren vs Shaheen | 5–5 | 50.00% |
| Siren vs Anna | 5–5 | 50.00% |
| Siren vs Armor King | 2–6 | 25.00% |
| Siren vs Panda | 3–2 | 60.00% |
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.