| Sonic vs Jin | 24–14 | 63.16% |
| Sonic vs Kazuya | 12–16 | 42.86% |
| Sonic vs Hwoarang | 12–2 | 85.71% |
| Sonic vs Lili | 10–4 | 71.43% |
| Sonic vs Law | 9–4 | 69.23% |
| Sonic vs Bryan | 6–6 | 50.00% |
| Sonic vs Dragunov | 11–1 | 91.67% |
| Sonic vs Yoshimitsu | 7–4 | 63.64% |
| Sonic vs Steve | 8–3 | 72.73% |
| Sonic vs Feng | 5–5 | 50.00% |
| Sonic vs Reina | 4–6 | 40.00% |
| Sonic vs Eddy | 5–5 | 50.00% |
| Sonic vs Heihachi | 6–4 | 60.00% |
| Sonic vs King | 3–4 | 42.86% |
| Sonic vs Asuka | 6–1 | 85.71% |
| Sonic vs Paul | 3–3 | 50.00% |
| Sonic vs Jack-8 | 4–2 | 66.67% |
| Sonic vs Devil Jin | 5–1 | 83.33% |
| Sonic vs Shaheen | 4–2 | 66.67% |
| Sonic vs Jun | 4–2 | 66.67% |
| Sonic vs Victor | 4–2 | 66.67% |
| Sonic vs Alisa | 2–3 | 40.00% |
| Sonic vs Nina | 4–1 | 80.00% |
| Sonic vs Lars | 2–2 | 50.00% |
| Sonic vs Leroy | 3–1 | 75.00% |
| Sonic vs Azucena | 4–0 | 100.00% |
| Sonic vs Lidia | 2–2 | 50.00% |
| Sonic vs Leo | 1–2 | 33.33% |
| Sonic vs Claudio | 1–2 | 33.33% |
| Sonic vs Panda | 2–1 | 66.67% |
| Sonic vs Xiaoyu | 2–0 | 100.00% |
| Sonic vs Kuma | 1–1 | 50.00% |
| Sonic vs Raven | 0–2 | 0.00% |
| Sonic vs Zafina | 0–1 | 0.00% |
| Sonic vs Clive | 1–0 | 100.00% |
| Sonic vs Fahkumram | 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.