| Ouilliam vs Lili | 17–10 | 62.96% |
| Ouilliam vs Hwoarang | 11–13 | 45.83% |
| Ouilliam vs Reina | 11–12 | 47.83% |
| Ouilliam vs Alisa | 12–10 | 54.55% |
| Ouilliam vs Jin | 18–3 | 85.71% |
| Ouilliam vs Paul | 9–10 | 47.37% |
| Ouilliam vs Devil Jin | 11–7 | 61.11% |
| Ouilliam vs Jun | 11–7 | 61.11% |
| Ouilliam vs Nina | 12–5 | 70.59% |
| Ouilliam vs Law | 8–8 | 50.00% |
| Ouilliam vs Yoshimitsu | 7–8 | 46.67% |
| Ouilliam vs King | 8–6 | 57.14% |
| Ouilliam vs Bryan | 6–8 | 42.86% |
| Ouilliam vs Steve | 8–6 | 57.14% |
| Ouilliam vs Lee | 8–6 | 57.14% |
| Ouilliam vs Dragunov | 10–2 | 83.33% |
| Ouilliam vs Asuka | 8–2 | 80.00% |
| Ouilliam vs Claudio | 6–4 | 60.00% |
| Ouilliam vs Heihachi | 7–3 | 70.00% |
| Ouilliam vs Jack-8 | 7–2 | 77.78% |
| Ouilliam vs Azucena | 9–0 | 100.00% |
| Ouilliam vs Eddy | 6–2 | 75.00% |
| Ouilliam vs Zafina | 5–1 | 83.33% |
| Ouilliam vs Lidia | 4–2 | 66.67% |
| Ouilliam vs Xiaoyu | 3–2 | 60.00% |
| Ouilliam vs Kazuya | 5–0 | 100.00% |
| Ouilliam vs Raven | 0–5 | 0.00% |
| Ouilliam vs Anna | 1–4 | 20.00% |
| Ouilliam vs Leroy | 2–2 | 50.00% |
| Ouilliam vs Victor | 2–2 | 50.00% |
| Ouilliam vs Kuma | 2–1 | 66.67% |
| Ouilliam vs Feng | 2–0 | 100.00% |
| Ouilliam vs Leo | 0–2 | 0.00% |
| Ouilliam vs Lars | 2–0 | 100.00% |
| Ouilliam vs Armor King | 0–2 | 0.00% |
| Ouilliam vs Shaheen | 1–0 | 100.00% |
| Ouilliam vs Clive | 0–1 | 0.00% |
| Ouilliam vs Fahkumram | 1–0 | 100.00% |
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.