| und3rwater vs Paul | 10–8 | 55.56% |
| und3rwater vs Eddy | 4–8 | 33.33% |
| und3rwater vs Jin | 7–2 | 77.78% |
| und3rwater vs Dragunov | 4–5 | 44.44% |
| und3rwater vs Bryan | 3–5 | 37.50% |
| und3rwater vs Yoshimitsu | 3–4 | 42.86% |
| und3rwater vs Kazuya | 3–4 | 42.86% |
| und3rwater vs Hwoarang | 3–3 | 50.00% |
| und3rwater vs Steve | 2–4 | 33.33% |
| und3rwater vs Claudio | 2–4 | 33.33% |
| und3rwater vs Xiaoyu | 3–2 | 60.00% |
| und3rwater vs Asuka | 3–2 | 60.00% |
| und3rwater vs Law | 2–2 | 50.00% |
| und3rwater vs Lili | 2–2 | 50.00% |
| und3rwater vs Leo | 2–2 | 50.00% |
| und3rwater vs Devil Jin | 1–2 | 33.33% |
| und3rwater vs Reina | 0–3 | 0.00% |
| und3rwater vs Feng | 0–2 | 0.00% |
| und3rwater vs Zafina | 2–0 | 100.00% |
| und3rwater vs Azucena | 1–1 | 50.00% |
| und3rwater vs King | 1–0 | 100.00% |
| und3rwater vs Alisa | 0–1 | 0.00% |
| und3rwater vs Shaheen | 1–0 | 100.00% |
| und3rwater vs Kuma | 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.