| Old_head vs Steve | 12–20 | 37.50% |
| Old_head vs Jin | 11–18 | 37.93% |
| Old_head vs Kazuya | 6–15 | 28.57% |
| Old_head vs Dragunov | 9–12 | 42.86% |
| Old_head vs Hwoarang | 7–13 | 35.00% |
| Old_head vs Reina | 10–10 | 50.00% |
| Old_head vs Lee | 6–13 | 31.58% |
| Old_head vs King | 8–10 | 44.44% |
| Old_head vs Clive | 6–11 | 35.29% |
| Old_head vs Nina | 5–11 | 31.25% |
| Old_head vs Paul | 4–9 | 30.77% |
| Old_head vs Bryan | 8–5 | 61.54% |
| Old_head vs Asuka | 1–12 | 7.69% |
| Old_head vs Victor | 4–9 | 30.77% |
| Old_head vs Lidia | 6–7 | 46.15% |
| Old_head vs Jun | 6–6 | 50.00% |
| Old_head vs Devil Jin | 2–9 | 18.18% |
| Old_head vs Azucena | 2–9 | 18.18% |
| Old_head vs Anna | 8–3 | 72.73% |
| Old_head vs Law | 6–4 | 60.00% |
| Old_head vs Xiaoyu | 5–5 | 50.00% |
| Old_head vs Lili | 1–9 | 10.00% |
| Old_head vs Shaheen | 4–6 | 40.00% |
| Old_head vs Feng | 3–6 | 33.33% |
| Old_head vs Lars | 4–5 | 44.44% |
| Old_head vs Alisa | 4–5 | 44.44% |
| Old_head vs Eddy | 1–8 | 11.11% |
| Old_head vs Armor King | 4–5 | 44.44% |
| Old_head vs Yoshimitsu | 2–5 | 28.57% |
| Old_head vs Leroy | 3–3 | 50.00% |
| Old_head vs Miary Zo | 2–4 | 33.33% |
| Old_head vs Leo | 3–2 | 60.00% |
| Old_head vs Kuma | 1–4 | 20.00% |
| Old_head vs Heihachi | 2–3 | 40.00% |
| Old_head vs Panda | 2–1 | 66.67% |
| Old_head vs Raven | 2–1 | 66.67% |
| Old_head vs Fahkumram | 2–1 | 66.67% |
| Old_head vs Jack-8 | 0–2 | 0.00% |
| Old_head 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.