| Grandpa Jin vs Reina | 9–17 | 34.62% |
| Grandpa Jin vs Alisa | 12–12 | 50.00% |
| Grandpa Jin vs Paul | 10–11 | 47.62% |
| Grandpa Jin vs Hwoarang | 12–8 | 60.00% |
| Grandpa Jin vs Victor | 8–9 | 47.06% |
| Grandpa Jin vs Bryan | 4–11 | 26.67% |
| Grandpa Jin vs Lee | 7–8 | 46.67% |
| Grandpa Jin vs Eddy | 10–5 | 66.67% |
| Grandpa Jin vs Leroy | 8–6 | 57.14% |
| Grandpa Jin vs Jun | 10–4 | 71.43% |
| Grandpa Jin vs Dragunov | 8–4 | 66.67% |
| Grandpa Jin vs Kazuya | 4–7 | 36.36% |
| Grandpa Jin vs Jack-8 | 7–4 | 63.64% |
| Grandpa Jin vs Lars | 6–5 | 54.55% |
| Grandpa Jin vs King | 5–5 | 50.00% |
| Grandpa Jin vs Xiaoyu | 4–6 | 40.00% |
| Grandpa Jin vs Jin | 3–7 | 30.00% |
| Grandpa Jin vs Feng | 5–5 | 50.00% |
| Grandpa Jin vs Raven | 6–4 | 60.00% |
| Grandpa Jin vs Claudio | 1–8 | 11.11% |
| Grandpa Jin vs Zafina | 6–3 | 66.67% |
| Grandpa Jin vs Yoshimitsu | 2–6 | 25.00% |
| Grandpa Jin vs Devil Jin | 6–1 | 85.71% |
| Grandpa Jin vs Shaheen | 3–4 | 42.86% |
| Grandpa Jin vs Steve | 2–4 | 33.33% |
| Grandpa Jin vs Leo | 5–1 | 83.33% |
| Grandpa Jin vs Nina | 3–2 | 60.00% |
| Grandpa Jin vs Kuma | 2–3 | 40.00% |
| Grandpa Jin vs Azucena | 2–3 | 40.00% |
| Grandpa Jin vs Asuka | 2–2 | 50.00% |
| Grandpa Jin vs Panda | 0–3 | 0.00% |
| Grandpa Jin vs Law | 0–2 | 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.