| Williams341 vs Reina | 19–8 | 70.37% |
| Williams341 vs King | 5–12 | 29.41% |
| Williams341 vs Lili | 6–10 | 37.50% |
| Williams341 vs Eddy | 8–8 | 50.00% |
| Williams341 vs Victor | 6–8 | 42.86% |
| Williams341 vs Devil Jin | 9–4 | 69.23% |
| Williams341 vs Feng | 9–4 | 69.23% |
| Williams341 vs Jin | 5–7 | 41.67% |
| Williams341 vs Kazuya | 7–3 | 70.00% |
| Williams341 vs Lars | 5–5 | 50.00% |
| Williams341 vs Dragunov | 8–2 | 80.00% |
| Williams341 vs Nina | 1–7 | 12.50% |
| Williams341 vs Yoshimitsu | 4–3 | 57.14% |
| Williams341 vs Steve | 4–3 | 57.14% |
| Williams341 vs Bryan | 6–0 | 100.00% |
| Williams341 vs Raven | 5–1 | 83.33% |
| Williams341 vs Asuka | 4–2 | 66.67% |
| Williams341 vs Leroy | 4–1 | 80.00% |
| Williams341 vs Jun | 5–0 | 100.00% |
| Williams341 vs Kuma | 2–2 | 50.00% |
| Williams341 vs Azucena | 1–3 | 25.00% |
| Williams341 vs Law | 4–0 | 100.00% |
| Williams341 vs Xiaoyu | 2–2 | 50.00% |
| Williams341 vs Jack-8 | 3–1 | 75.00% |
| Williams341 vs Leo | 3–1 | 75.00% |
| Williams341 vs Alisa | 1–3 | 25.00% |
| Williams341 vs Lee | 2–1 | 66.67% |
| Williams341 vs Zafina | 2–0 | 100.00% |
| Williams341 vs Paul | 0–2 | 0.00% |
| Williams341 vs Panda | 0–2 | 0.00% |
| Williams341 vs Heihachi | 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.