| UnderDog Demon vs Armor King | 36–57 | 38.71% |
| UnderDog Demon vs Steve | 32–46 | 41.03% |
| UnderDog Demon vs King | 28–32 | 46.67% |
| UnderDog Demon vs Jin | 21–21 | 50.00% |
| UnderDog Demon vs Law | 16–23 | 41.03% |
| UnderDog Demon vs Azucena | 16–23 | 41.03% |
| UnderDog Demon vs Dragunov | 15–22 | 40.54% |
| UnderDog Demon vs Reina | 15–18 | 45.45% |
| UnderDog Demon vs Hwoarang | 9–18 | 33.33% |
| UnderDog Demon vs Lili | 14–12 | 53.85% |
| UnderDog Demon vs Victor | 9–17 | 34.62% |
| UnderDog Demon vs Kazuya | 2–23 | 8.00% |
| UnderDog Demon vs Alisa | 8–15 | 34.78% |
| UnderDog Demon vs Bryan | 8–14 | 36.36% |
| UnderDog Demon vs Jun | 9–13 | 40.91% |
| UnderDog Demon vs Paul | 8–13 | 38.10% |
| UnderDog Demon vs Feng | 8–11 | 42.11% |
| UnderDog Demon vs Fahkumram | 7–11 | 38.89% |
| UnderDog Demon vs Yoshimitsu | 8–9 | 47.06% |
| UnderDog Demon vs Leo | 8–9 | 47.06% |
| UnderDog Demon vs Eddy | 3–14 | 17.65% |
| UnderDog Demon vs Jack-8 | 8–8 | 50.00% |
| UnderDog Demon vs Lidia | 7–9 | 43.75% |
| UnderDog Demon vs Asuka | 8–7 | 53.33% |
| UnderDog Demon vs Lee | 7–8 | 46.67% |
| UnderDog Demon vs Heihachi | 7–8 | 46.67% |
| UnderDog Demon vs Devil Jin | 8–6 | 57.14% |
| UnderDog Demon vs Xiaoyu | 10–3 | 76.92% |
| UnderDog Demon vs Raven | 6–7 | 46.15% |
| UnderDog Demon vs Kuma | 5–7 | 41.67% |
| UnderDog Demon vs Anna | 6–6 | 50.00% |
| UnderDog Demon vs Nina | 4–6 | 40.00% |
| UnderDog Demon vs Clive | 1–7 | 12.50% |
| UnderDog Demon vs Lars | 4–3 | 57.14% |
| UnderDog Demon vs Claudio | 0–7 | 0.00% |
| UnderDog Demon vs Zafina | 4–3 | 57.14% |
| UnderDog Demon vs Leroy | 2–3 | 40.00% |
| UnderDog Demon vs Shaheen | 0–4 | 0.00% |
| UnderDog Demon vs Panda | 1–1 | 50.00% |
| UnderDog Demon vs Miary Zo | 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.