| Sieg vs Kazuya | 26–33 | 44.07% |
| Sieg vs Reina | 22–30 | 42.31% |
| Sieg vs King | 23–27 | 46.00% |
| Sieg vs Jin | 26–20 | 56.52% |
| Sieg vs Dragunov | 16–22 | 42.11% |
| Sieg vs Bryan | 24–11 | 68.57% |
| Sieg vs Steve | 11–20–1 | 35.48% |
| Sieg vs Lili | 13–19 | 40.62% |
| Sieg vs Paul | 14–12 | 53.85% |
| Sieg vs Xiaoyu | 6–18 | 25.00% |
| Sieg vs Asuka | 12–11 | 52.17% |
| Sieg vs Victor | 11–12 | 47.83% |
| Sieg vs Devil Jin | 6–15 | 28.57% |
| Sieg vs Lars | 12–9 | 57.14% |
| Sieg vs Leo | 10–10 | 50.00% |
| Sieg vs Claudio | 9–10 | 47.37% |
| Sieg vs Hwoarang | 11–7 | 61.11% |
| Sieg vs Law | 8–9 | 47.06% |
| Sieg vs Yoshimitsu | 8–8 | 50.00% |
| Sieg vs Jun | 9–6 | 60.00% |
| Sieg vs Alisa | 7–7 | 50.00% |
| Sieg vs Lidia | 3–10 | 23.08% |
| Sieg vs Lee | 4–8 | 33.33% |
| Sieg vs Leroy | 7–5 | 58.33% |
| Sieg vs Eddy | 5–7 | 41.67% |
| Sieg vs Feng | 7–3 | 70.00% |
| Sieg vs Heihachi | 5–3 | 62.50% |
| Sieg vs Nina | 1–6 | 14.29% |
| Sieg vs Kuma | 2–5 | 28.57% |
| Sieg vs Armor King | 1–6 | 14.29% |
| Sieg vs Azucena | 4–2 | 66.67% |
| Sieg vs Jack-8 | 1–4 | 20.00% |
| Sieg vs Shaheen | 3–2 | 60.00% |
| Sieg vs Panda | 2–3 | 40.00% |
| Sieg vs Clive | 4–1 | 80.00% |
| Sieg vs Miary Zo | 3–2 | 60.00% |
| Sieg vs Anna | 0–4 | 0.00% |
| Sieg vs Fahkumram | 4–0 | 100.00% |
| Sieg vs Zafina | 2–1 | 66.67% |
| Sieg vs Raven | 2–1 | 66.67% |
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.