| Grandfather vs Kazuya | 16–15 | 51.61% |
| Grandfather vs Jin | 12–16 | 42.86% |
| Grandfather vs Reina | 12–9 | 57.14% |
| Grandfather vs King | 11–6 | 64.71% |
| Grandfather vs Hwoarang | 8–7 | 53.33% |
| Grandfather vs Bryan | 5–7 | 41.67% |
| Grandfather vs Dragunov | 6–5 | 54.55% |
| Grandfather vs Law | 4–5 | 44.44% |
| Grandfather vs Devil Jin | 6–3 | 66.67% |
| Grandfather vs Lili | 3–6 | 33.33% |
| Grandfather vs Paul | 2–6 | 25.00% |
| Grandfather vs Yoshimitsu | 1–6 | 14.29% |
| Grandfather vs Xiaoyu | 5–2 | 71.43% |
| Grandfather vs Lars | 1–6 | 14.29% |
| Grandfather vs Leroy | 3–4 | 42.86% |
| Grandfather vs Jun | 2–5 | 28.57% |
| Grandfather vs Eddy | 2–5 | 28.57% |
| Grandfather vs Alisa | 0–6 | 0.00% |
| Grandfather vs Nina | 4–2 | 66.67% |
| Grandfather vs Kuma | 4–2 | 66.67% |
| Grandfather vs Victor | 3–3 | 50.00% |
| Grandfather vs Steve | 1–4 | 20.00% |
| Grandfather vs Asuka | 3–2 | 60.00% |
| Grandfather vs Lee | 1–4 | 20.00% |
| Grandfather vs Azucena | 3–2 | 60.00% |
| Grandfather vs Raven | 0–5 | 0.00% |
| Grandfather vs Jack-8 | 2–2 | 50.00% |
| Grandfather vs Feng | 1–3 | 25.00% |
| Grandfather vs Leo | 2–2 | 50.00% |
| Grandfather vs Shaheen | 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.