| Siemi vs King | 1–6 | 14.29% |
| Siemi vs Jin | 1–6 | 14.29% |
| Siemi vs Bryan | 2–4 | 33.33% |
| Siemi vs Reina | 4–2 | 66.67% |
| Siemi vs Raven | 3–3 | 50.00% |
| Siemi vs Steve | 2–3 | 40.00% |
| Siemi vs Lili | 3–2 | 60.00% |
| Siemi vs Eddy | 2–3 | 40.00% |
| Siemi vs Lidia | 2–3 | 40.00% |
| Siemi vs Dragunov | 2–2 | 50.00% |
| Siemi vs Victor | 2–2 | 50.00% |
| Siemi vs Hwoarang | 2–1 | 66.67% |
| Siemi vs Kazuya | 2–1 | 66.67% |
| Siemi vs Asuka | 3–0 | 100.00% |
| Siemi vs Alisa | 1–2 | 33.33% |
| Siemi vs Armor King | 2–1 | 66.67% |
| Siemi vs Law | 0–2 | 0.00% |
| Siemi vs Jun | 1–1 | 50.00% |
| Siemi vs Heihachi | 0–2 | 0.00% |
| Siemi vs Devil Jin | 0–1 | 0.00% |
| Siemi vs Leo | 1–0 | 100.00% |
| Siemi vs Lars | 0–1 | 0.00% |
| Siemi vs Nina | 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.