| Grandpa vs Jin | 1–7 | 12.50% |
| Grandpa vs Steve | 4–4 | 50.00% |
| Grandpa vs Lee | 5–2 | 71.43% |
| Grandpa vs Victor | 3–4 | 42.86% |
| Grandpa vs Eddy | 1–6 | 14.29% |
| Grandpa vs Leo | 2–4 | 33.33% |
| Grandpa vs Lars | 1–5 | 16.67% |
| Grandpa vs Xiaoyu | 1–4 | 20.00% |
| Grandpa vs Leroy | 2–3 | 40.00% |
| Grandpa vs Reina | 2–3 | 40.00% |
| Grandpa vs Kazuya | 1–3 | 25.00% |
| Grandpa vs Devil Jin | 1–3 | 25.00% |
| Grandpa vs Lili | 0–4 | 0.00% |
| Grandpa vs Azucena | 0–4 | 0.00% |
| Grandpa vs Lidia | 1–3 | 25.00% |
| Grandpa vs Dragunov | 1–2 | 33.33% |
| Grandpa vs Nina | 1–2 | 33.33% |
| Grandpa vs Zafina | 1–2 | 33.33% |
| Grandpa vs Jun | 1–2 | 33.33% |
| Grandpa vs King | 0–2 | 0.00% |
| Grandpa vs Yoshimitsu | 2–0 | 100.00% |
| Grandpa vs Asuka | 1–1 | 50.00% |
| Grandpa vs Alisa | 0–2 | 0.00% |
| Grandpa vs Paul | 0–1 | 0.00% |
| Grandpa vs Law | 1–0 | 100.00% |
| Grandpa vs Bryan | 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.