| SONIC vs Eddy | 11–24 | 31.43% |
| SONIC vs King | 8–20 | 28.57% |
| SONIC vs Lili | 10–12 | 45.45% |
| SONIC vs Kazuya | 7–12 | 36.84% |
| SONIC vs Jin | 5–11 | 31.25% |
| SONIC vs Victor | 4–12 | 25.00% |
| SONIC vs Jun | 4–11 | 26.67% |
| SONIC vs Steve | 10–4 | 71.43% |
| SONIC vs Hwoarang | 3–9 | 25.00% |
| SONIC vs Reina | 3–9 | 25.00% |
| SONIC vs Dragunov | 6–5 | 54.55% |
| SONIC vs Azucena | 4–7 | 36.36% |
| SONIC vs Raven | 6–5 | 54.55% |
| SONIC vs Law | 6–4 | 60.00% |
| SONIC vs Alisa | 4–6 | 40.00% |
| SONIC vs Nina | 0–10 | 0.00% |
| SONIC vs Asuka | 3–4 | 42.86% |
| SONIC vs Devil Jin | 4–3 | 57.14% |
| SONIC vs Kuma | 0–6 | 0.00% |
| SONIC vs Paul | 2–3 | 40.00% |
| SONIC vs Yoshimitsu | 2–3 | 40.00% |
| SONIC vs Lars | 1–4 | 20.00% |
| SONIC vs Heihachi | 2–3 | 40.00% |
| SONIC vs Bryan | 2–2 | 50.00% |
| SONIC vs Zafina | 3–1 | 75.00% |
| SONIC vs Leroy | 0–4 | 0.00% |
| SONIC vs Lidia | 2–2 | 50.00% |
| SONIC vs Jack-8 | 2–1 | 66.67% |
| SONIC vs Leo | 1–2 | 33.33% |
| SONIC vs Claudio | 0–3 | 0.00% |
| SONIC vs Shaheen | 1–2 | 33.33% |
| SONIC vs Anna | 0–3 | 0.00% |
| SONIC vs Armor King | 0–3 | 0.00% |
| SONIC vs Xiaoyu | 1–1 | 50.00% |
| SONIC vs Feng | 1–1 | 50.00% |
| SONIC vs Lee | 0–2 | 0.00% |
| SONIC vs Clive | 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.