| willyj vs Kazuya | 141–180 | 43.93% |
| willyj vs Jin | 158–153 | 50.80% |
| willyj vs Bryan | 122–175 | 41.08% |
| willyj vs King | 97–132 | 42.36% |
| willyj vs Paul | 75–129 | 36.76% |
| willyj vs Steve | 83–115 | 41.92% |
| willyj vs Reina | 102–72 | 58.62% |
| willyj vs Dragunov | 65–101 | 39.16% |
| willyj vs Hwoarang | 60–71 | 45.80% |
| willyj vs Law | 57–72 | 44.19% |
| willyj vs Yoshimitsu | 52–76 | 40.62% |
| willyj vs Lili | 58–70 | 45.31% |
| willyj vs Lee | 39–79 | 33.05% |
| willyj vs Eddy | 63–52 | 54.78% |
| willyj vs Lars | 42–69 | 37.84% |
| willyj vs Devil Jin | 60–41 | 59.41% |
| willyj vs Jun | 47–49 | 48.96% |
| willyj vs Victor | 42–50 | 45.65% |
| willyj vs Feng | 39–46 | 45.88% |
| willyj vs Azucena | 40–38 | 51.28% |
| willyj vs Heihachi | 41–37 | 52.56% |
| willyj vs Nina | 19–46 | 29.23% |
| willyj vs Jack-8 | 27–35 | 43.55% |
| willyj vs Asuka | 25–36 | 40.98% |
| willyj vs Xiaoyu | 26–33 | 44.07% |
| willyj vs Lidia | 30–27 | 52.63% |
| willyj vs Claudio | 24–27 | 47.06% |
| willyj vs Kuma | 18–33 | 35.29% |
| willyj vs Leo | 27–22 | 55.10% |
| willyj vs Leroy | 19–29 | 39.58% |
| willyj vs Shaheen | 15–25 | 37.50% |
| willyj vs Raven | 19–19 | 50.00% |
| willyj vs Alisa | 11–22 | 33.33% |
| willyj vs Panda | 4–15 | 21.05% |
| willyj vs Zafina | 5–7 | 41.67% |
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.