| Billyy91 vs Heihachi | 9–15 | 37.50% |
| Billyy91 vs King | 8–13 | 38.10% |
| Billyy91 vs Jin | 6–9 | 40.00% |
| Billyy91 vs Kazuya | 7–8 | 46.67% |
| Billyy91 vs Reina | 7–7 | 50.00% |
| Billyy91 vs Victor | 5–8 | 38.46% |
| Billyy91 vs Jun | 8–4 | 66.67% |
| Billyy91 vs Hwoarang | 3–7 | 30.00% |
| Billyy91 vs Steve | 1–8 | 11.11% |
| Billyy91 vs Azucena | 8–1 | 88.89% |
| Billyy91 vs Lidia | 4–5 | 44.44% |
| Billyy91 vs Lili | 4–4 | 50.00% |
| Billyy91 vs Law | 0–7 | 0.00% |
| Billyy91 vs Yoshimitsu | 6–1 | 85.71% |
| Billyy91 vs Alisa | 2–5 | 28.57% |
| Billyy91 vs Devil Jin | 3–3 | 50.00% |
| Billyy91 vs Dragunov | 2–4 | 33.33% |
| Billyy91 vs Nina | 1–5 | 16.67% |
| Billyy91 vs Lee | 1–5 | 16.67% |
| Billyy91 vs Eddy | 1–5 | 16.67% |
| Billyy91 vs Jack-8 | 4–1 | 80.00% |
| Billyy91 vs Bryan | 1–3 | 25.00% |
| Billyy91 vs Lars | 1–3 | 25.00% |
| Billyy91 vs Panda | 2–2 | 50.00% |
| Billyy91 vs Xiaoyu | 2–1 | 66.67% |
| Billyy91 vs Claudio | 1–2 | 33.33% |
| Billyy91 vs Paul | 0–2 | 0.00% |
| Billyy91 vs Feng | 0–2 | 0.00% |
| Billyy91 vs Kuma | 0–2 | 0.00% |
| Billyy91 vs Asuka | 1–0 | 100.00% |
| Billyy91 vs Zafina | 1–0 | 100.00% |
| Billyy91 vs Leroy | 1–0 | 100.00% |
| Billyy91 vs Raven | 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.