| Sigma vs Eddy | 18–15 | 54.55% |
| Sigma vs King | 15–14 | 51.72% |
| Sigma vs Law | 14–9 | 60.87% |
| Sigma vs Jin | 4–18 | 18.18% |
| Sigma vs Reina | 11–11 | 50.00% |
| Sigma vs Kazuya | 5–14 | 26.32% |
| Sigma vs Nina | 9–10 | 47.37% |
| Sigma vs Victor | 5–14 | 26.32% |
| Sigma vs Bryan | 11–6 | 64.71% |
| Sigma vs Heihachi | 6–11 | 35.29% |
| Sigma vs Steve | 7–8 | 46.67% |
| Sigma vs Leroy | 6–9 | 40.00% |
| Sigma vs Hwoarang | 5–9 | 35.71% |
| Sigma vs Yoshimitsu | 4–9 | 30.77% |
| Sigma vs Dragunov | 6–7 | 46.15% |
| Sigma vs Jack-8 | 5–7 | 41.67% |
| Sigma vs Devil Jin | 6–6 | 50.00% |
| Sigma vs Lili | 6–5 | 54.55% |
| Sigma vs Lars | 6–5 | 54.55% |
| Sigma vs Lee | 4–7 | 36.36% |
| Sigma vs Asuka | 6–4 | 60.00% |
| Sigma vs Xiaoyu | 5–4 | 55.56% |
| Sigma vs Lidia | 6–2 | 75.00% |
| Sigma vs Clive | 4–3 | 57.14% |
| Sigma vs Paul | 4–2 | 66.67% |
| Sigma vs Raven | 2–3 | 40.00% |
| Sigma vs Claudio | 2–2 | 50.00% |
| Sigma vs Zafina | 1–3 | 25.00% |
| Sigma vs Armor King | 2–2 | 50.00% |
| Sigma vs Feng | 0–3 | 0.00% |
| Sigma vs Alisa | 2–1 | 66.67% |
| Sigma vs Azucena | 1–2 | 33.33% |
| Sigma vs Anna | 2–1 | 66.67% |
| Sigma vs Fahkumram | 2–1 | 66.67% |
| Sigma vs Miary Zo | 2–1 | 66.67% |
| Sigma vs Kuma | 0–2 | 0.00% |
| Sigma vs Panda | 0–1 | 0.00% |
| Sigma vs Jun | 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.