| Willside vs King | 6–12 | 33.33% |
| Willside vs Steve | 9–6 | 60.00% |
| Willside vs Jin | 8–6 | 57.14% |
| Willside vs Kazuya | 6–8 | 42.86% |
| Willside vs Reina | 7–7 | 50.00% |
| Willside vs Bryan | 4–9 | 30.77% |
| Willside vs Lidia | 4–8 | 33.33% |
| Willside vs Law | 4–6 | 40.00% |
| Willside vs Lili | 4–5 | 44.44% |
| Willside vs Feng | 4–4 | 50.00% |
| Willside vs Yoshimitsu | 2–4 | 33.33% |
| Willside vs Jun | 6–0 | 100.00% |
| Willside vs Dragunov | 1–4 | 20.00% |
| Willside vs Lee | 3–2 | 60.00% |
| Willside vs Asuka | 2–2 | 50.00% |
| Willside vs Devil Jin | 3–1 | 75.00% |
| Willside vs Leo | 0–4 | 0.00% |
| Willside vs Alisa | 1–3 | 25.00% |
| Willside vs Kuma | 2–2 | 50.00% |
| Willside vs Panda | 0–4 | 0.00% |
| Willside vs Azucena | 4–0 | 100.00% |
| Willside vs Victor | 0–4 | 0.00% |
| Willside vs Raven | 2–2 | 50.00% |
| Willside vs Paul | 1–2 | 33.33% |
| Willside vs Lars | 2–1 | 66.67% |
| Willside vs Claudio | 1–2 | 33.33% |
| Willside vs Nina | 1–2 | 33.33% |
| Willside vs Zafina | 2–1 | 66.67% |
| Willside vs Eddy | 2–1 | 66.67% |
| Willside vs Xiaoyu | 0–2 | 0.00% |
| Willside vs Jack-8 | 1–0 | 100.00% |
| Willside vs Heihachi | 1–0 | 100.00% |
| Willside vs Clive | 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.