| WilliamAfton vs Steve | 8–4 | 66.67% |
| WilliamAfton vs Lili | 5–3 | 62.50% |
| WilliamAfton vs Azucena | 3–5 | 37.50% |
| WilliamAfton vs Victor | 2–6 | 25.00% |
| WilliamAfton vs Eddy | 4–4 | 50.00% |
| WilliamAfton vs Yoshimitsu | 4–3 | 57.14% |
| WilliamAfton vs Kazuya | 1–6 | 14.29% |
| WilliamAfton vs Law | 2–3 | 40.00% |
| WilliamAfton vs King | 3–2 | 60.00% |
| WilliamAfton vs Bryan | 2–3 | 40.00% |
| WilliamAfton vs Reina | 3–2 | 60.00% |
| WilliamAfton vs Feng | 2–2 | 50.00% |
| WilliamAfton vs Kuma | 2–2 | 50.00% |
| WilliamAfton vs Zafina | 4–0 | 100.00% |
| WilliamAfton vs Dragunov | 1–2 | 33.33% |
| WilliamAfton vs Nina | 1–2 | 33.33% |
| WilliamAfton vs Paul | 1–1 | 50.00% |
| WilliamAfton vs Hwoarang | 2–0 | 100.00% |
| WilliamAfton vs Devil Jin | 0–2 | 0.00% |
| WilliamAfton vs Lee | 0–2 | 0.00% |
| WilliamAfton vs Leroy | 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.