| Old mate vs Kazuya | 48–62 | 43.64% |
| Old mate vs Jin | 41–54 | 43.16% |
| Old mate vs King | 26–45 | 36.62% |
| Old mate vs Bryan | 21–44 | 32.31% |
| Old mate vs Reina | 31–32 | 49.21% |
| Old mate vs Law | 33–29 | 53.23% |
| Old mate vs Dragunov | 23–33 | 41.07% |
| Old mate vs Jun | 28–27 | 50.91% |
| Old mate vs Yoshimitsu | 31–20 | 60.78% |
| Old mate vs Steve | 24–25 | 48.98% |
| Old mate vs Lidia | 17–32 | 34.69% |
| Old mate vs Lili | 24–24 | 50.00% |
| Old mate vs Paul | 18–19 | 48.65% |
| Old mate vs Leo | 18–18 | 50.00% |
| Old mate vs Heihachi | 18–15 | 54.55% |
| Old mate vs Asuka | 16–16 | 50.00% |
| Old mate vs Lee | 16–15 | 51.61% |
| Old mate vs Hwoarang | 16–14 | 53.33% |
| Old mate vs Eddy | 12–16 | 42.86% |
| Old mate vs Lars | 15–9 | 62.50% |
| Old mate vs Xiaoyu | 8–15 | 34.78% |
| Old mate vs Azucena | 6–15 | 28.57% |
| Old mate vs Feng | 8–12 | 40.00% |
| Old mate vs Victor | 11–9 | 55.00% |
| Old mate vs Jack-8 | 9–10 | 47.37% |
| Old mate vs Shaheen | 9–10 | 47.37% |
| Old mate vs Nina | 9–9 | 50.00% |
| Old mate vs Devil Jin | 5–11 | 31.25% |
| Old mate vs Leroy | 8–3 | 72.73% |
| Old mate vs Alisa | 3–5 | 37.50% |
| Old mate vs Raven | 3–5 | 37.50% |
| Old mate vs Kuma | 3–4 | 42.86% |
| Old mate vs Panda | 6–1 | 85.71% |
| Old mate vs Zafina | 2–2 | 50.00% |
| Old mate vs Claudio | 1–2 | 33.33% |
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.