| Siah vs Law | 24–18 | 57.14% |
| Siah vs Jin | 17–20 | 45.95% |
| Siah vs Dragunov | 18–17 | 51.43% |
| Siah vs Kazuya | 18–13 | 58.06% |
| Siah vs King | 16–14 | 53.33% |
| Siah vs Steve | 18–12 | 60.00% |
| Siah vs Azucena | 12–14 | 46.15% |
| Siah vs Reina | 7–16 | 30.43% |
| Siah vs Bryan | 6–14 | 30.00% |
| Siah vs Hwoarang | 10–9 | 52.63% |
| Siah vs Miary Zo | 7–12 | 36.84% |
| Siah vs Asuka | 8–8 | 50.00% |
| Siah vs Jun | 8–8 | 50.00% |
| Siah vs Heihachi | 12–4 | 75.00% |
| Siah vs Armor King | 6–9 | 40.00% |
| Siah vs Lars | 6–8 | 42.86% |
| Siah vs Nina | 8–6 | 57.14% |
| Siah vs Clive | 4–10 | 28.57% |
| Siah vs Victor | 9–4 | 69.23% |
| Siah vs Anna | 5–8 | 38.46% |
| Siah vs Lili | 5–7 | 41.67% |
| Siah vs Leroy | 4–8 | 33.33% |
| Siah vs Yoshimitsu | 5–6 | 45.45% |
| Siah vs Leo | 7–4 | 63.64% |
| Siah vs Shaheen | 3–8 | 27.27% |
| Siah vs Alisa | 4–6 | 40.00% |
| Siah vs Fahkumram | 4–6 | 40.00% |
| Siah vs Eddy | 4–5 | 44.44% |
| Siah vs Xiaoyu | 3–5 | 37.50% |
| Siah vs Lee | 3–5 | 37.50% |
| Siah vs Lidia | 4–4 | 50.00% |
| Siah vs Paul | 3–4 | 42.86% |
| Siah vs Devil Jin | 3–4 | 42.86% |
| Siah vs Kuma | 2–5 | 28.57% |
| Siah vs Feng | 4–1 | 80.00% |
| Siah vs Jack-8 | 2–1 | 66.67% |
| Siah vs Raven | 2–1 | 66.67% |
| Siah vs Claudio | 0–2 | 0.00% |
| Siah vs Zafina | 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.