| WiLLiAmS vs Lili | 47–31 | 60.26% |
| WiLLiAmS vs Hwoarang | 43–31 | 58.11% |
| WiLLiAmS vs Jin | 46–22 | 67.65% |
| WiLLiAmS vs King | 44–20 | 68.75% |
| WiLLiAmS vs Eddy | 34–22 | 60.71% |
| WiLLiAmS vs Heihachi | 30–22 | 57.69% |
| WiLLiAmS vs Kazuya | 34–16 | 68.00% |
| WiLLiAmS vs Xiaoyu | 20–21 | 48.78% |
| WiLLiAmS vs Reina | 14–26 | 35.00% |
| WiLLiAmS vs Feng | 19–17 | 52.78% |
| WiLLiAmS vs Azucena | 18–16 | 52.94% |
| WiLLiAmS vs Asuka | 14–17 | 45.16% |
| WiLLiAmS vs Bryan | 15–14 | 51.72% |
| WiLLiAmS vs Lee | 16–12 | 57.14% |
| WiLLiAmS vs Lars | 17–9 | 65.38% |
| WiLLiAmS vs Dragunov | 17–8 | 68.00% |
| WiLLiAmS vs Yoshimitsu | 10–14 | 41.67% |
| WiLLiAmS vs Claudio | 9–14 | 39.13% |
| WiLLiAmS vs Nina | 16–7 | 69.57% |
| WiLLiAmS vs Alisa | 13–9 | 59.09% |
| WiLLiAmS vs Jun | 11–11 | 50.00% |
| WiLLiAmS vs Leo | 10–11 | 47.62% |
| WiLLiAmS vs Steve | 10–9 | 52.63% |
| WiLLiAmS vs Lidia | 15–4 | 78.95% |
| WiLLiAmS vs Law | 7–11 | 38.89% |
| WiLLiAmS vs Paul | 6–8 | 42.86% |
| WiLLiAmS vs Raven | 6–8 | 42.86% |
| WiLLiAmS vs Jack-8 | 5–8 | 38.46% |
| WiLLiAmS vs Devil Jin | 3–10 | 23.08% |
| WiLLiAmS vs Victor | 7–4 | 63.64% |
| WiLLiAmS vs Leroy | 2–8 | 20.00% |
| WiLLiAmS vs Shaheen | 6–3 | 66.67% |
| WiLLiAmS vs Kuma | 4–5 | 44.44% |
| WiLLiAmS vs Zafina | 4–5 | 44.44% |
| WiLLiAmS vs Clive | 4–2 | 66.67% |
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.