| SigmaDemon vs Law | 20–38 | 34.48% |
| SigmaDemon vs Reina | 26–26 | 50.00% |
| SigmaDemon vs King | 28–23 | 54.90% |
| SigmaDemon vs Kazuya | 17–32 | 34.69% |
| SigmaDemon vs Hwoarang | 25–23 | 52.08% |
| SigmaDemon vs Bryan | 22–21 | 51.16% |
| SigmaDemon vs Steve | 22–19 | 53.66% |
| SigmaDemon vs Jun | 20–21 | 48.78% |
| SigmaDemon vs Jin | 17–21 | 44.74% |
| SigmaDemon vs Heihachi | 21–11 | 65.62% |
| SigmaDemon vs Clive | 14–14 | 50.00% |
| SigmaDemon vs Feng | 13–12 | 52.00% |
| SigmaDemon vs Nina | 14–11 | 56.00% |
| SigmaDemon vs Lili | 12–12 | 50.00% |
| SigmaDemon vs Alisa | 10–10 | 50.00% |
| SigmaDemon vs Victor | 15–5 | 75.00% |
| SigmaDemon vs Yoshimitsu | 6–11 | 35.29% |
| SigmaDemon vs Xiaoyu | 6–11 | 35.29% |
| SigmaDemon vs Devil Jin | 7–10 | 41.18% |
| SigmaDemon vs Lee | 4–11 | 26.67% |
| SigmaDemon vs Paul | 5–9 | 35.71% |
| SigmaDemon vs Eddy | 6–7 | 46.15% |
| SigmaDemon vs Jack-8 | 5–6 | 45.45% |
| SigmaDemon vs Asuka | 4–5 | 44.44% |
| SigmaDemon vs Leo | 6–3 | 66.67% |
| SigmaDemon vs Leroy | 5–4 | 55.56% |
| SigmaDemon vs Claudio | 4–4 | 50.00% |
| SigmaDemon vs Kuma | 3–5 | 37.50% |
| SigmaDemon vs Dragunov | 3–4 | 42.86% |
| SigmaDemon vs Raven | 5–2 | 71.43% |
| SigmaDemon vs Lidia | 3–4 | 42.86% |
| SigmaDemon vs Lars | 0–4 | 0.00% |
| SigmaDemon vs Shaheen | 1–2 | 33.33% |
| SigmaDemon vs Azucena | 2–1 | 66.67% |
| SigmaDemon vs Panda | 0–1 | 0.00% |
| SigmaDemon vs Zafina | 0–1 | 0.00% |
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.