| Williboi vs King | 20–25 | 44.44% |
| Williboi vs Steve | 12–28 | 30.00% |
| Williboi vs Armor King | 10–26 | 27.78% |
| Williboi vs Hwoarang | 8–15 | 34.78% |
| Williboi vs Jin | 4–19 | 17.39% |
| Williboi vs Lili | 8–14 | 36.36% |
| Williboi vs Reina | 11–11 | 50.00% |
| Williboi vs Bryan | 2–15 | 11.76% |
| Williboi vs Jun | 7–10 | 41.18% |
| Williboi vs Eddy | 8–8 | 50.00% |
| Williboi vs Lars | 7–8 | 46.67% |
| Williboi vs Azucena | 7–8 | 46.67% |
| Williboi vs Victor | 6–8 | 42.86% |
| Williboi vs Law | 2–11 | 15.38% |
| Williboi vs Kazuya | 2–10 | 16.67% |
| Williboi vs Alisa | 4–8 | 33.33% |
| Williboi vs Lidia | 3–9 | 25.00% |
| Williboi vs Paul | 4–7 | 36.36% |
| Williboi vs Xiaoyu | 3–8 | 27.27% |
| Williboi vs Asuka | 0–11 | 0.00% |
| Williboi vs Clive | 6–2 | 75.00% |
| Williboi vs Fahkumram | 1–7 | 12.50% |
| Williboi vs Yoshimitsu | 2–5 | 28.57% |
| Williboi vs Dragunov | 4–3 | 57.14% |
| Williboi vs Nina | 1–6 | 14.29% |
| Williboi vs Heihachi | 4–3 | 57.14% |
| Williboi vs Leo | 0–6 | 0.00% |
| Williboi vs Lee | 2–4 | 33.33% |
| Williboi vs Anna | 1–5 | 16.67% |
| Williboi vs Devil Jin | 1–4 | 20.00% |
| Williboi vs Feng | 0–5 | 0.00% |
| Williboi vs Jack-8 | 2–2 | 50.00% |
| Williboi vs Raven | 2–2 | 50.00% |
| Williboi vs Kuma | 0–3 | 0.00% |
| Williboi vs Panda | 1–2 | 33.33% |
| Williboi vs Zafina | 2–1 | 66.67% |
| Williboi vs Shaheen | 0–2 | 0.00% |
| Williboi vs Leroy | 0–2 | 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.