| Old-Head vs Eddy | 11–17 | 39.29% |
| Old-Head vs Jin | 14–13 | 51.85% |
| Old-Head vs Reina | 11–11 | 50.00% |
| Old-Head vs Law | 10–8 | 55.56% |
| Old-Head vs Hwoarang | 7–11 | 38.89% |
| Old-Head vs Steve | 11–7 | 61.11% |
| Old-Head vs King | 7–8 | 46.67% |
| Old-Head vs Jun | 7–7 | 50.00% |
| Old-Head vs Azucena | 8–3 | 72.73% |
| Old-Head vs Kazuya | 8–2 | 80.00% |
| Old-Head vs Lili | 6–4 | 60.00% |
| Old-Head vs Bryan | 6–3 | 66.67% |
| Old-Head vs Shaheen | 2–7 | 22.22% |
| Old-Head vs Victor | 5–4 | 55.56% |
| Old-Head vs Asuka | 4–4 | 50.00% |
| Old-Head vs Leo | 2–6 | 25.00% |
| Old-Head vs Lars | 6–2 | 75.00% |
| Old-Head vs Claudio | 5–3 | 62.50% |
| Old-Head vs Raven | 4–4 | 50.00% |
| Old-Head vs Dragunov | 5–2 | 71.43% |
| Old-Head vs Lidia | 5–2 | 71.43% |
| Old-Head vs Feng | 3–3 | 50.00% |
| Old-Head vs Alisa | 2–4 | 33.33% |
| Old-Head vs Nina | 3–3 | 50.00% |
| Old-Head vs Leroy | 3–3 | 50.00% |
| Old-Head vs Paul | 3–2 | 60.00% |
| Old-Head vs Yoshimitsu | 2–3 | 40.00% |
| Old-Head vs Xiaoyu | 3–2 | 60.00% |
| Old-Head vs Kuma | 3–2 | 60.00% |
| Old-Head vs Clive | 2–3 | 40.00% |
| Old-Head vs Devil Jin | 0–4 | 0.00% |
| Old-Head vs Heihachi | 3–1 | 75.00% |
| Old-Head vs Jack-8 | 1–2 | 33.33% |
| Old-Head vs Lee | 2–1 | 66.67% |
| Old-Head vs Anna | 2–1 | 66.67% |
| Old-Head vs Panda | 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.