| Williboy vs Jin | 7–25 | 21.88% |
| Williboy vs Bryan | 2–14 | 12.50% |
| Williboy vs Reina | 5–11 | 31.25% |
| Williboy vs Lili | 6–8 | 42.86% |
| Williboy vs Clive | 3–11 | 21.43% |
| Williboy vs King | 2–11 | 15.38% |
| Williboy vs Kazuya | 4–8 | 33.33% |
| Williboy vs Steve | 5–7 | 41.67% |
| Williboy vs Eddy | 6–6 | 50.00% |
| Williboy vs Hwoarang | 6–5 | 54.55% |
| Williboy vs Dragunov | 5–6 | 45.45% |
| Williboy vs Heihachi | 7–3 | 70.00% |
| Williboy vs Azucena | 4–5 | 44.44% |
| Williboy vs Paul | 0–8 | 0.00% |
| Williboy vs Alisa | 3–5 | 37.50% |
| Williboy vs Law | 1–6 | 14.29% |
| Williboy vs Yoshimitsu | 1–6 | 14.29% |
| Williboy vs Lee | 1–5 | 16.67% |
| Williboy vs Jun | 1–4 | 20.00% |
| Williboy vs Victor | 0–5 | 0.00% |
| Williboy vs Devil Jin | 0–4 | 0.00% |
| Williboy vs Feng | 2–2 | 50.00% |
| Williboy vs Nina | 1–3 | 25.00% |
| Williboy vs Kuma | 4–0 | 100.00% |
| Williboy vs Xiaoyu | 0–3 | 0.00% |
| Williboy vs Lars | 0–3 | 0.00% |
| Williboy vs Claudio | 0–3 | 0.00% |
| Williboy vs Jack-8 | 1–1 | 50.00% |
| Williboy vs Asuka | 2–0 | 100.00% |
| Williboy vs Leo | 0–2 | 0.00% |
| Williboy vs Panda | 1–1 | 50.00% |
| Williboy vs Zafina | 1–0 | 100.00% |
| Williboy vs Leroy | 0–1 | 0.00% |
| Williboy vs Raven | 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.