| Undreu vs Reina | 8–1 | 88.89% |
| Undreu vs King | 7–1 | 87.50% |
| Undreu vs Steve | 8–0 | 100.00% |
| Undreu vs Devil Jin | 1–6 | 14.29% |
| Undreu vs Azucena | 0–6 | 0.00% |
| Undreu vs Eddy | 3–3 | 50.00% |
| Undreu vs Clive | 2–4 | 33.33% |
| Undreu vs Lili | 1–4 | 20.00% |
| Undreu vs Dragunov | 1–3 | 25.00% |
| Undreu vs Lars | 4–0 | 100.00% |
| Undreu vs Heihachi | 0–4 | 0.00% |
| Undreu vs Law | 1–2 | 33.33% |
| Undreu vs Hwoarang | 1–2 | 33.33% |
| Undreu vs Xiaoyu | 2–1 | 66.67% |
| Undreu vs Kazuya | 2–1 | 66.67% |
| Undreu vs Bryan | 0–2 | 0.00% |
| Undreu vs Asuka | 1–1 | 50.00% |
| Undreu vs Alisa | 2–0 | 100.00% |
| Undreu vs Nina | 0–2 | 0.00% |
| Undreu vs Zafina | 2–0 | 100.00% |
| Undreu vs Leroy | 0–2 | 0.00% |
| Undreu vs Jun | 1–1 | 50.00% |
| Undreu vs Paul | 1–0 | 100.00% |
| Undreu vs Jin | 0–1 | 0.00% |
| Undreu vs Kuma | 0–1 | 0.00% |
| Undreu vs Anna | 1–0 | 100.00% |
| Undreu 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.