| YerBoiBilliam vs Reina | 14–25 | 35.90% |
| YerBoiBilliam vs Jun | 18–17 | 51.43% |
| YerBoiBilliam vs King | 11–23 | 32.35% |
| YerBoiBilliam vs Jin | 16–17 | 48.48% |
| YerBoiBilliam vs Steve | 13–19 | 40.62% |
| YerBoiBilliam vs Lidia | 15–16 | 48.39% |
| YerBoiBilliam vs Law | 11–18 | 37.93% |
| YerBoiBilliam vs Kazuya | 10–16 | 38.46% |
| YerBoiBilliam vs Xiaoyu | 12–12 | 50.00% |
| YerBoiBilliam vs Victor | 8–14 | 36.36% |
| YerBoiBilliam vs Hwoarang | 9–12 | 42.86% |
| YerBoiBilliam vs Eddy | 9–12 | 42.86% |
| YerBoiBilliam vs Yoshimitsu | 9–11 | 45.00% |
| YerBoiBilliam vs Asuka | 9–11 | 45.00% |
| YerBoiBilliam vs Jack-8 | 9–10 | 47.37% |
| YerBoiBilliam vs Dragunov | 5–14 | 26.32% |
| YerBoiBilliam vs Bryan | 8–10 | 44.44% |
| YerBoiBilliam vs Lili | 3–15 | 16.67% |
| YerBoiBilliam vs Azucena | 7–10 | 41.18% |
| YerBoiBilliam vs Leroy | 7–9 | 43.75% |
| YerBoiBilliam vs Lars | 8–7 | 53.33% |
| YerBoiBilliam vs Lee | 8–7 | 53.33% |
| YerBoiBilliam vs Leo | 3–9 | 25.00% |
| YerBoiBilliam vs Paul | 2–9 | 18.18% |
| YerBoiBilliam vs Heihachi | 6–5 | 54.55% |
| YerBoiBilliam vs Alisa | 6–4 | 60.00% |
| YerBoiBilliam vs Devil Jin | 4–4 | 50.00% |
| YerBoiBilliam vs Claudio | 5–3 | 62.50% |
| YerBoiBilliam vs Nina | 3–5 | 37.50% |
| YerBoiBilliam vs Shaheen | 1–4 | 20.00% |
| YerBoiBilliam vs Raven | 2–2 | 50.00% |
| YerBoiBilliam vs Feng | 2–1 | 66.67% |
| YerBoiBilliam vs Zafina | 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.