| Oldsnake vs King | 10–12 | 45.45% |
| Oldsnake vs Reina | 8–12 | 40.00% |
| Oldsnake vs Hwoarang | 8–11 | 42.11% |
| Oldsnake vs Eddy | 5–14 | 26.32% |
| Oldsnake vs Jin | 5–13 | 27.78% |
| Oldsnake vs Steve | 6–11 | 35.29% |
| Oldsnake vs Kazuya | 8–8 | 50.00% |
| Oldsnake vs Lili | 13–3 | 81.25% |
| Oldsnake vs Azucena | 8–8 | 50.00% |
| Oldsnake vs Asuka | 2–12 | 14.29% |
| Oldsnake vs Leo | 7–6 | 53.85% |
| Oldsnake vs Bryan | 3–9 | 25.00% |
| Oldsnake vs Jun | 7–5 | 58.33% |
| Oldsnake vs Victor | 9–3 | 75.00% |
| Oldsnake vs Dragunov | 2–8 | 20.00% |
| Oldsnake vs Raven | 3–6 | 33.33% |
| Oldsnake vs Law | 2–6 | 25.00% |
| Oldsnake vs Yoshimitsu | 6–1 | 85.71% |
| Oldsnake vs Jack-8 | 3–4 | 42.86% |
| Oldsnake vs Paul | 3–3 | 50.00% |
| Oldsnake vs Xiaoyu | 3–3 | 50.00% |
| Oldsnake vs Kuma | 0–6 | 0.00% |
| Oldsnake vs Lee | 2–3 | 40.00% |
| Oldsnake vs Leroy | 3–2 | 60.00% |
| Oldsnake vs Devil Jin | 2–2 | 50.00% |
| Oldsnake vs Lars | 1–3 | 25.00% |
| Oldsnake vs Nina | 2–2 | 50.00% |
| Oldsnake vs Feng | 1–2 | 33.33% |
| Oldsnake vs Alisa | 2–1 | 66.67% |
| Oldsnake vs Claudio | 2–0 | 100.00% |
| Oldsnake vs Shaheen | 2–0 | 100.00% |
| Oldsnake vs Panda | 2–0 | 100.00% |
| Oldsnake vs Zafina | 1–1 | 50.00% |
| Oldsnake vs Lidia | 1–1 | 50.00% |
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.