| Sigma vs Steve | 12–14 | 46.15% |
| Sigma vs Hwoarang | 15–10 | 60.00% |
| Sigma vs Heihachi | 16–8 | 66.67% |
| Sigma vs Law | 9–12 | 42.86% |
| Sigma vs Reina | 13–8 | 61.90% |
| Sigma vs Kazuya | 7–11 | 38.89% |
| Sigma vs Jin | 4–12 | 25.00% |
| Sigma vs King | 10–5 | 66.67% |
| Sigma vs Yoshimitsu | 4–5 | 44.44% |
| Sigma vs Eddy | 5–4 | 55.56% |
| Sigma vs Leo | 6–2 | 75.00% |
| Sigma vs Lili | 3–4 | 42.86% |
| Sigma vs Asuka | 2–4 | 33.33% |
| Sigma vs Devil Jin | 6–0 | 100.00% |
| Sigma vs Leroy | 2–4 | 33.33% |
| Sigma vs Bryan | 1–4 | 20.00% |
| Sigma vs Jack-8 | 2–3 | 40.00% |
| Sigma vs Dragunov | 2–3 | 40.00% |
| Sigma vs Lee | 1–3 | 25.00% |
| Sigma vs Victor | 0–4 | 0.00% |
| Sigma vs Paul | 2–1 | 66.67% |
| Sigma vs Feng | 2–1 | 66.67% |
| Sigma vs Alisa | 1–2 | 33.33% |
| Sigma vs Zafina | 3–0 | 100.00% |
| Sigma vs Raven | 2–1 | 66.67% |
| Sigma vs Xiaoyu | 1–1 | 50.00% |
| Sigma vs Nina | 0–2 | 0.00% |
| Sigma vs Azucena | 2–0 | 100.00% |
| Sigma vs Clive | 1–1 | 50.00% |
| Sigma vs Lars | 1–0 | 100.00% |
| Sigma vs Kuma | 1–0 | 100.00% |
| Sigma vs Anna | 1–0 | 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.