| Billy vs King | 56–78 | 41.79% |
| Billy vs Jin | 69–63 | 52.27% |
| Billy vs Law | 49–71 | 40.83% |
| Billy vs Paul | 48–56 | 46.15% |
| Billy vs Kazuya | 62–37 | 62.63% |
| Billy vs Dragunov | 30–63 | 32.26% |
| Billy vs Bryan | 29–38 | 43.28% |
| Billy vs Eddy | 25–35 | 41.67% |
| Billy vs Devil Jin | 30–28 | 51.72% |
| Billy vs Steve | 28–29 | 49.12% |
| Billy vs Nina | 32–25 | 56.14% |
| Billy vs Hwoarang | 25–31 | 44.64% |
| Billy vs Victor | 17–32 | 34.69% |
| Billy vs Lars | 22–24 | 47.83% |
| Billy vs Reina | 20–24 | 45.45% |
| Billy vs Alisa | 18–23 | 43.90% |
| Billy vs Heihachi | 15–21 | 41.67% |
| Billy vs Yoshimitsu | 15–20 | 42.86% |
| Billy vs Lee | 17–17 | 50.00% |
| Billy vs Lili | 11–17 | 39.29% |
| Billy vs Clive | 9–19 | 32.14% |
| Billy vs Feng | 12–14 | 46.15% |
| Billy vs Jun | 14–7 | 66.67% |
| Billy vs Raven | 11–9 | 55.00% |
| Billy vs Jack-8 | 4–14 | 22.22% |
| Billy vs Asuka | 7–9 | 43.75% |
| Billy vs Leo | 5–10 | 33.33% |
| Billy vs Shaheen | 5–10 | 33.33% |
| Billy vs Xiaoyu | 5–9 | 35.71% |
| Billy vs Claudio | 6–8 | 42.86% |
| Billy vs Azucena | 8–5 | 61.54% |
| Billy vs Kuma | 7–3 | 70.00% |
| Billy vs Leroy | 3–4 | 42.86% |
| Billy vs Panda | 2–2 | 50.00% |
| Billy vs Zafina | 1–3 | 25.00% |
| Billy vs Fahkumram | 2–1 | 66.67% |
| Billy vs Armor King | 1–2 | 33.33% |
| Billy vs Anna | 1–1 | 50.00% |
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.