| Hayley Williams vs Kazuya | 89–76 | 53.94% |
| Hayley Williams vs Bryan | 84–63 | 57.14% |
| Hayley Williams vs Jin | 60–54 | 52.63% |
| Hayley Williams vs Reina | 64–40 | 61.54% |
| Hayley Williams vs Paul | 44–46 | 48.89% |
| Hayley Williams vs Hwoarang | 51–39 | 56.67% |
| Hayley Williams vs Steve | 39–37 | 51.32% |
| Hayley Williams vs King | 39–33 | 54.17% |
| Hayley Williams vs Heihachi | 33–34 | 49.25% |
| Hayley Williams vs Dragunov | 44–20 | 68.75% |
| Hayley Williams vs Yoshimitsu | 24–39 | 38.10% |
| Hayley Williams vs Lili | 31–26 | 54.39% |
| Hayley Williams vs Law | 28–28 | 50.00% |
| Hayley Williams vs Jun | 24–29 | 45.28% |
| Hayley Williams vs Xiaoyu | 25–25 | 50.00% |
| Hayley Williams vs Lee | 23–25 | 47.92% |
| Hayley Williams vs Nina | 19–23 | 45.24% |
| Hayley Williams vs Alisa | 13–27 | 32.50% |
| Hayley Williams vs Asuka | 16–21 | 43.24% |
| Hayley Williams vs Azucena | 25–11 | 69.44% |
| Hayley Williams vs Feng | 15–20 | 42.86% |
| Hayley Williams vs Lars | 9–26 | 25.71% |
| Hayley Williams vs Devil Jin | 7–24 | 22.58% |
| Hayley Williams vs Clive | 16–11 | 59.26% |
| Hayley Williams vs Lidia | 10–16 | 38.46% |
| Hayley Williams vs Raven | 14–11 | 56.00% |
| Hayley Williams vs Jack-8 | 4–16 | 20.00% |
| Hayley Williams vs Anna | 9–11 | 45.00% |
| Hayley Williams vs Eddy | 10–9 | 52.63% |
| Hayley Williams vs Fahkumram | 11–6 | 64.71% |
| Hayley Williams vs Victor | 6–7 | 46.15% |
| Hayley Williams vs Kuma | 3–8 | 27.27% |
| Hayley Williams vs Claudio | 6–4 | 60.00% |
| Hayley Williams vs Leo | 4–4 | 50.00% |
| Hayley Williams vs Shaheen | 2–6 | 25.00% |
| Hayley Williams vs Zafina | 2–3 | 40.00% |
| Hayley Williams vs Leroy | 1–2 | 33.33% |
| Hayley Williams vs Panda | 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.