| williams vs Eddy | 1–13 | 7.14% |
| williams vs Hwoarang | 3–7 | 30.00% |
| williams vs King | 5–4 | 55.56% |
| williams vs Jun | 4–4 | 50.00% |
| williams vs Raven | 2–4 | 33.33% |
| williams vs Reina | 3–2 | 60.00% |
| williams vs Paul | 1–3 | 25.00% |
| williams vs Jin | 1–2 | 33.33% |
| williams vs Steve | 1–2 | 33.33% |
| williams vs Feng | 1–2 | 33.33% |
| williams vs Lili | 2–1 | 66.67% |
| williams vs Nina | 1–2 | 33.33% |
| williams vs Lee | 1–2 | 33.33% |
| williams vs Victor | 1–2 | 33.33% |
| williams vs Xiaoyu | 1–1 | 50.00% |
| williams vs Kazuya | 0–2 | 0.00% |
| williams vs Devil Jin | 1–0 | 100.00% |
| williams vs Leo | 0–1 | 0.00% |
| williams vs Kuma | 0–1 | 0.00% |
| williams vs Azucena | 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.