| Sieb vs Hwoarang | 12–1 | 92.31% |
| Sieb vs King | 8–3 | 72.73% |
| Sieb vs Kazuya | 5–6 | 45.45% |
| Sieb vs Dragunov | 8–1 | 88.89% |
| Sieb vs Nina | 7–2 | 77.78% |
| Sieb vs Eddy | 7–2 | 77.78% |
| Sieb vs Reina | 8–0 | 100.00% |
| Sieb vs Azucena | 8–0 | 100.00% |
| Sieb vs Law | 3–3 | 50.00% |
| Sieb vs Yoshimitsu | 6–0 | 100.00% |
| Sieb vs Steve | 6–0 | 100.00% |
| Sieb vs Lars | 1–5 | 16.67% |
| Sieb vs Raven | 6–0 | 100.00% |
| Sieb vs Feng | 3–2 | 60.00% |
| Sieb vs Asuka | 4–0 | 100.00% |
| Sieb vs Armor King | 4–0 | 100.00% |
| Sieb vs Jack-8 | 2–1 | 66.67% |
| Sieb vs Lili | 3–0 | 100.00% |
| Sieb vs Panda | 2–1 | 66.67% |
| Sieb vs Jun | 3–0 | 100.00% |
| Sieb vs Anna | 2–1 | 66.67% |
| Sieb vs Xiaoyu | 1–1 | 50.00% |
| Sieb vs Bryan | 1–1 | 50.00% |
| Sieb vs Lee | 2–0 | 100.00% |
| Sieb vs Zafina | 2–0 | 100.00% |
| Sieb vs Heihachi | 2–0 | 100.00% |
| Sieb vs Clive | 2–0 | 100.00% |
| Sieb vs Miary Zo | 2–0 | 100.00% |
| Sieb vs Paul | 1–0 | 100.00% |
| Sieb vs Leo | 1–0 | 100.00% |
| Sieb vs Kuma | 0–1 | 0.00% |
| Sieb vs Lidia | 1–0 | 100.00% |
| Sieb vs Fahkumram | 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.