| Willy vs Eddy | 13–10 | 56.52% |
| Willy vs King | 9–13 | 40.91% |
| Willy vs Jin | 9–10 | 47.37% |
| Willy vs Bryan | 12–4 | 75.00% |
| Willy vs Steve | 5–11 | 31.25% |
| Willy vs Kazuya | 11–4 | 73.33% |
| Willy vs Paul | 9–3 | 75.00% |
| Willy vs Reina | 9–2 | 81.82% |
| Willy vs Devil Jin | 7–3 | 70.00% |
| Willy vs Jack-8 | 4–4 | 50.00% |
| Willy vs Asuka | 4–4 | 50.00% |
| Willy vs Victor | 6–2 | 75.00% |
| Willy vs Leo | 6–1 | 85.71% |
| Willy vs Hwoarang | 3–3 | 50.00% |
| Willy vs Claudio | 1–5 | 16.67% |
| Willy vs Raven | 4–2 | 66.67% |
| Willy vs Heihachi | 4–2 | 66.67% |
| Willy vs Yoshimitsu | 3–2 | 60.00% |
| Willy vs Dragunov | 2–3 | 40.00% |
| Willy vs Lars | 4–1 | 80.00% |
| Willy vs Jun | 4–1 | 80.00% |
| Willy vs Clive | 4–1 | 80.00% |
| Willy vs Law | 2–2 | 50.00% |
| Willy vs Lili | 3–1 | 75.00% |
| Willy vs Azucena | 4–0 | 100.00% |
| Willy vs Lidia | 4–0 | 100.00% |
| Willy vs Xiaoyu | 3–0 | 100.00% |
| Willy vs Nina | 3–0 | 100.00% |
| Willy vs Lee | 2–1 | 66.67% |
| Willy vs Zafina | 3–0 | 100.00% |
| Willy vs Leroy | 1–2 | 33.33% |
| Willy vs Shaheen | 2–0 | 100.00% |
| Willy vs Kuma | 2–0 | 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.