| K_willia vs Azucena | 5–3 | 62.50% |
| K_willia vs Hwoarang | 4–2 | 66.67% |
| K_willia vs King | 3–1 | 75.00% |
| K_willia vs Jack-8 | 3–1 | 75.00% |
| K_willia vs Lili | 3–1 | 75.00% |
| K_willia vs Jun | 4–0 | 100.00% |
| K_willia vs Jin | 3–0 | 100.00% |
| K_willia vs Eddy | 2–1 | 66.67% |
| K_willia vs Paul | 1–1 | 50.00% |
| K_willia vs Kazuya | 2–0 | 100.00% |
| K_willia vs Asuka | 2–0 | 100.00% |
| K_willia vs Zafina | 2–0 | 100.00% |
| K_willia vs Bryan | 1–0 | 100.00% |
| K_willia vs Steve | 1–0 | 100.00% |
| K_willia vs Feng | 0–1 | 0.00% |
| K_willia vs Dragunov | 1–0 | 100.00% |
| K_willia vs Leo | 1–0 | 100.00% |
| K_willia vs Shaheen | 1–0 | 100.00% |
| K_willia vs Nina | 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.