| Billy vs King | 9–13 | 40.91% |
| Billy vs Steve | 15–7 | 68.18% |
| Billy vs Kazuya | 12–8 | 60.00% |
| Billy vs Jin | 7–9 | 43.75% |
| Billy vs Devil Jin | 7–5 | 58.33% |
| Billy vs Law | 5–6 | 45.45% |
| Billy vs Nina | 6–5 | 54.55% |
| Billy vs Jun | 4–7 | 36.36% |
| Billy vs Reina | 7–4 | 63.64% |
| Billy vs Eddy | 5–6 | 45.45% |
| Billy vs Bryan | 5–4 | 55.56% |
| Billy vs Victor | 5–4 | 55.56% |
| Billy vs Heihachi | 4–4 | 50.00% |
| Billy vs Yoshimitsu | 1–6 | 14.29% |
| Billy vs Feng | 4–3 | 57.14% |
| Billy vs Xiaoyu | 2–4 | 33.33% |
| Billy vs Asuka | 2–4 | 33.33% |
| Billy vs Dragunov | 4–2 | 66.67% |
| Billy vs Kuma | 5–1 | 83.33% |
| Billy vs Lidia | 3–3 | 50.00% |
| Billy vs Paul | 3–2 | 60.00% |
| Billy vs Azucena | 4–1 | 80.00% |
| Billy vs Lars | 2–2 | 50.00% |
| Billy vs Alisa | 1–3 | 25.00% |
| Billy vs Shaheen | 3–1 | 75.00% |
| Billy vs Lee | 1–3 | 25.00% |
| Billy vs Hwoarang | 3–0 | 100.00% |
| Billy vs Jack-8 | 1–2 | 33.33% |
| Billy vs Panda | 1–2 | 33.33% |
| Billy vs Lili | 2–0 | 100.00% |
| Billy vs Raven | 0–2 | 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.