| Underhel vs Kazuya | 10–8 | 55.56% |
| Underhel vs King | 13–3 | 81.25% |
| Underhel vs Jin | 10–6 | 62.50% |
| Underhel vs Lidia | 13–3 | 81.25% |
| Underhel vs Law | 7–7 | 50.00% |
| Underhel vs Xiaoyu | 8–4 | 66.67% |
| Underhel vs Steve | 3–9 | 25.00% |
| Underhel vs Reina | 10–2 | 83.33% |
| Underhel vs Hwoarang | 6–4 | 60.00% |
| Underhel vs Lars | 6–4 | 60.00% |
| Underhel vs Victor | 6–3 | 66.67% |
| Underhel vs Yoshimitsu | 4–4 | 50.00% |
| Underhel vs Lili | 5–3 | 62.50% |
| Underhel vs Heihachi | 8–0 | 100.00% |
| Underhel vs Clive | 5–3 | 62.50% |
| Underhel vs Bryan | 4–3 | 57.14% |
| Underhel vs Devil Jin | 5–2 | 71.43% |
| Underhel vs Nina | 6–1 | 85.71% |
| Underhel vs Feng | 6–0 | 100.00% |
| Underhel vs Lee | 2–4 | 33.33% |
| Underhel vs Raven | 3–3 | 50.00% |
| Underhel vs Eddy | 4–2 | 66.67% |
| Underhel vs Dragunov | 4–1 | 80.00% |
| Underhel vs Alisa | 4–1 | 80.00% |
| Underhel vs Kuma | 3–1 | 75.00% |
| Underhel vs Paul | 3–0 | 100.00% |
| Underhel vs Leo | 3–0 | 100.00% |
| Underhel vs Azucena | 2–1 | 66.67% |
| Underhel vs Claudio | 2–0 | 100.00% |
| Underhel vs Jun | 2–0 | 100.00% |
| Underhel vs Anna | 0–2 | 0.00% |
| Underhel vs Shaheen | 1–0 | 100.00% |
| Underhel vs Panda | 1–0 | 100.00% |
| Underhel vs Leroy | 1–0 | 100.00% |
| Underhel vs Armor King | 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.