| Grandpappy vs King | 6–9 | 40.00% |
| Grandpappy vs Jun | 6–2 | 75.00% |
| Grandpappy vs Victor | 2–6 | 25.00% |
| Grandpappy vs Xiaoyu | 3–2 | 60.00% |
| Grandpappy vs Hwoarang | 3–1 | 75.00% |
| Grandpappy vs Bryan | 4–0 | 100.00% |
| Grandpappy vs Kazuya | 0–4 | 0.00% |
| Grandpappy vs Reina | 2–2 | 50.00% |
| Grandpappy vs Raven | 4–0 | 100.00% |
| Grandpappy vs Lidia | 4–0 | 100.00% |
| Grandpappy vs Heihachi | 4–0 | 100.00% |
| Grandpappy vs Law | 1–2 | 33.33% |
| Grandpappy vs Jin | 2–1 | 66.67% |
| Grandpappy vs Steve | 2–1 | 66.67% |
| Grandpappy vs Lili | 3–0 | 100.00% |
| Grandpappy vs Shaheen | 2–1 | 66.67% |
| Grandpappy vs Nina | 3–0 | 100.00% |
| Grandpappy vs Leroy | 1–2 | 33.33% |
| Grandpappy vs Eddy | 1–2 | 33.33% |
| Grandpappy vs Jack-8 | 2–0 | 100.00% |
| Grandpappy vs Dragunov | 2–0 | 100.00% |
| Grandpappy vs Alisa | 0–2 | 0.00% |
| Grandpappy vs Claudio | 2–0 | 100.00% |
| Grandpappy vs Kuma | 2–0 | 100.00% |
| Grandpappy vs Panda | 0–2 | 0.00% |
| Grandpappy vs Asuka | 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.