| Willoy vs Kazuya | 176–125 | 58.47% |
| Willoy vs Jin | 156–105 | 59.77% |
| Willoy vs Bryan | 149–102 | 59.36% |
| Willoy vs Paul | 129–77 | 62.62% |
| Willoy vs King | 105–97 | 51.98% |
| Willoy vs Lili | 125–74 | 62.81% |
| Willoy vs Yoshimitsu | 108–52 | 67.50% |
| Willoy vs Devil Jin | 100–56 | 64.10% |
| Willoy vs Lee | 86–65 | 56.95% |
| Willoy vs Law | 95–54 | 63.76% |
| Willoy vs Dragunov | 83–64 | 56.46% |
| Willoy vs Nina | 86–53 | 61.87% |
| Willoy vs Steve | 73–62 | 54.07% |
| Willoy vs Lars | 84–50 | 62.69% |
| Willoy vs Heihachi | 73–59 | 55.30% |
| Willoy vs Hwoarang | 81–46 | 63.78% |
| Willoy vs Xiaoyu | 76–51 | 59.84% |
| Willoy vs Reina | 74–49 | 60.16% |
| Willoy vs Alisa | 68–53 | 56.20% |
| Willoy vs Feng | 70–44 | 61.40% |
| Willoy vs Zafina | 77–35 | 68.75% |
| Willoy vs Anna | 81–27 | 75.00% |
| Willoy vs Raven | 59–40 | 59.60% |
| Willoy vs Azucena | 61–37 | 62.24% |
| Willoy vs Eddy | 54–42 | 56.25% |
| Willoy vs Leo | 56–39 | 58.95% |
| Willoy vs Clive | 43–49 | 46.74% |
| Willoy vs Victor | 53–36 | 59.55% |
| Willoy vs Claudio | 45–43 | 51.14% |
| Willoy vs Lidia | 49–39 | 55.68% |
| Willoy vs Asuka | 54–33 | 62.07% |
| Willoy vs Jun | 54–24 | 69.23% |
| Willoy vs Armor King | 38–37 | 50.67% |
| Willoy vs Leroy | 38–34 | 52.78% |
| Willoy vs Jack-8 | 38–26 | 59.38% |
| Willoy vs Shaheen | 32–31 | 50.79% |
| Willoy vs Kuma | 28–20 | 58.33% |
| Willoy vs Fahkumram | 25–23 | 52.08% |
| Willoy vs Panda | 20–17 | 54.05% |
| Willoy vs Miary Zo | 18–19 | 48.65% |
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.