| Billy vs Jin | 20–11 | 64.52% |
| Billy vs King | 14–14 | 50.00% |
| Billy vs Kazuya | 13–12 | 52.00% |
| Billy vs Armor King | 12–12 | 50.00% |
| Billy vs Law | 10–13 | 43.48% |
| Billy vs Yoshimitsu | 16–7 | 69.57% |
| Billy vs Steve | 9–13 | 40.91% |
| Billy vs Jun | 9–11 | 45.00% |
| Billy vs Lili | 7–10 | 41.18% |
| Billy vs Dragunov | 8–9 | 47.06% |
| Billy vs Hwoarang | 12–4 | 75.00% |
| Billy vs Bryan | 11–5 | 68.75% |
| Billy vs Leroy | 12–4 | 75.00% |
| Billy vs Clive | 7–9 | 43.75% |
| Billy vs Asuka | 8–6 | 57.14% |
| Billy vs Eddy | 2–12 | 14.29% |
| Billy vs Xiaoyu | 9–4 | 69.23% |
| Billy vs Lee | 8–5 | 61.54% |
| Billy vs Reina | 7–6 | 53.85% |
| Billy vs Miary Zo | 5–8 | 38.46% |
| Billy vs Lars | 6–6 | 50.00% |
| Billy vs Fahkumram | 8–4 | 66.67% |
| Billy vs Heihachi | 5–6 | 45.45% |
| Billy vs Paul | 4–5 | 44.44% |
| Billy vs Nina | 6–2 | 75.00% |
| Billy vs Azucena | 3–5 | 37.50% |
| Billy vs Zafina | 3–4 | 42.86% |
| Billy vs Victor | 5–2 | 71.43% |
| Billy vs Raven | 2–5 | 28.57% |
| Billy vs Anna | 2–5 | 28.57% |
| Billy vs Shaheen | 3–3 | 50.00% |
| Billy vs Lidia | 4–2 | 66.67% |
| Billy vs Jack-8 | 2–3 | 40.00% |
| Billy vs Devil Jin | 2–3 | 40.00% |
| Billy vs Alisa | 2–2 | 50.00% |
| Billy vs Claudio | 1–3 | 25.00% |
| Billy vs Feng | 0–3 | 0.00% |
| Billy vs Kuma | 3–0 | 100.00% |
| Billy vs Panda | 2–1 | 66.67% |
| Billy vs Leo | 2–0 | 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.