| GrumpyJoeBlack vs Law | 41–42 | 49.40% |
| GrumpyJoeBlack vs King | 30–36 | 45.45% |
| GrumpyJoeBlack vs Steve | 26–37 | 41.27% |
| GrumpyJoeBlack vs Kazuya | 18–43 | 29.51% |
| GrumpyJoeBlack vs Fahkumram | 21–39 | 35.00% |
| GrumpyJoeBlack vs Hwoarang | 17–37 | 31.48% |
| GrumpyJoeBlack vs Jin | 18–32 | 36.00% |
| GrumpyJoeBlack vs Reina | 28–21 | 57.14% |
| GrumpyJoeBlack vs Eddy | 17–32 | 34.69% |
| GrumpyJoeBlack vs Dragunov | 15–26 | 36.59% |
| GrumpyJoeBlack vs Yoshimitsu | 11–25 | 30.56% |
| GrumpyJoeBlack vs Azucena | 19–15 | 55.88% |
| GrumpyJoeBlack vs Lee | 12–20 | 37.50% |
| GrumpyJoeBlack vs Feng | 12–19 | 38.71% |
| GrumpyJoeBlack vs Bryan | 16–13 | 55.17% |
| GrumpyJoeBlack vs Jun | 17–12 | 58.62% |
| GrumpyJoeBlack vs Victor | 9–19 | 32.14% |
| GrumpyJoeBlack vs Asuka | 12–14 | 46.15% |
| GrumpyJoeBlack vs Devil Jin | 13–13 | 50.00% |
| GrumpyJoeBlack vs Lili | 8–18 | 30.77% |
| GrumpyJoeBlack vs Clive | 17–6 | 73.91% |
| GrumpyJoeBlack vs Lars | 10–12 | 45.45% |
| GrumpyJoeBlack vs Nina | 6–16 | 27.27% |
| GrumpyJoeBlack vs Lidia | 10–12 | 45.45% |
| GrumpyJoeBlack vs Leo | 10–11 | 47.62% |
| GrumpyJoeBlack vs Xiaoyu | 9–11 | 45.00% |
| GrumpyJoeBlack vs Leroy | 10–9 | 52.63% |
| GrumpyJoeBlack vs Raven | 8–10 | 44.44% |
| GrumpyJoeBlack vs Jack-8 | 9–8 | 52.94% |
| GrumpyJoeBlack vs Heihachi | 6–10 | 37.50% |
| GrumpyJoeBlack vs Claudio | 6–9 | 40.00% |
| GrumpyJoeBlack vs Anna | 10–5 | 66.67% |
| GrumpyJoeBlack vs Shaheen | 5–8 | 38.46% |
| GrumpyJoeBlack vs Paul | 4–4 | 50.00% |
| GrumpyJoeBlack vs Alisa | 4–4 | 50.00% |
| GrumpyJoeBlack vs Zafina | 3–5 | 37.50% |
| GrumpyJoeBlack vs Kuma | 3–2 | 60.00% |
| GrumpyJoeBlack vs Panda | 1–4 | 20.00% |
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.