| Sensei William vs Jin | 26–19 | 57.78% |
| Sensei William vs Reina | 21–20 | 51.22% |
| Sensei William vs Kazuya | 22–12 | 64.71% |
| Sensei William vs Paul | 16–14 | 53.33% |
| Sensei William vs Yoshimitsu | 18–12 | 60.00% |
| Sensei William vs Jun | 18–11 | 62.07% |
| Sensei William vs Azucena | 18–11 | 62.07% |
| Sensei William vs King | 15–13 | 53.57% |
| Sensei William vs Lili | 17–11 | 60.71% |
| Sensei William vs Bryan | 13–11 | 54.17% |
| Sensei William vs Lee | 12–9 | 57.14% |
| Sensei William vs Feng | 11–9 | 55.00% |
| Sensei William vs Steve | 11–8 | 57.89% |
| Sensei William vs Claudio | 8–11 | 42.11% |
| Sensei William vs Asuka | 12–6 | 66.67% |
| Sensei William vs Dragunov | 7–11 | 38.89% |
| Sensei William vs Lars | 10–8 | 55.56% |
| Sensei William vs Nina | 10–8 | 55.56% |
| Sensei William vs Law | 10–6 | 62.50% |
| Sensei William vs Hwoarang | 10–6 | 62.50% |
| Sensei William vs Xiaoyu | 8–8 | 50.00% |
| Sensei William vs Devil Jin | 6–7 | 46.15% |
| Sensei William vs Raven | 9–4 | 69.23% |
| Sensei William vs Victor | 6–6 | 50.00% |
| Sensei William vs Shaheen | 6–5 | 54.55% |
| Sensei William vs Leo | 4–6 | 40.00% |
| Sensei William vs Alisa | 6–4 | 60.00% |
| Sensei William vs Heihachi | 5–5 | 50.00% |
| Sensei William vs Eddy | 3–6 | 33.33% |
| Sensei William vs Panda | 5–3 | 62.50% |
| Sensei William vs Leroy | 3–3 | 50.00% |
| Sensei William vs Zafina | 3–2 | 60.00% |
| Sensei William vs Jack-8 | 2–1 | 66.67% |
| Sensei William vs Kuma | 2–1 | 66.67% |
| Sensei William vs Lidia | 0–1 | 0.00% |
| Sensei William 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.