| Grumpy vs King | 38–37 | 50.67% |
| Grumpy vs Reina | 38–27 | 58.46% |
| Grumpy vs Kazuya | 34–28 | 54.84% |
| Grumpy vs Bryan | 36–22 | 62.07% |
| Grumpy vs Jin | 30–17 | 63.83% |
| Grumpy vs Yoshimitsu | 22–16 | 57.89% |
| Grumpy vs Lili | 23–12 | 65.71% |
| Grumpy vs Hwoarang | 21–13 | 61.76% |
| Grumpy vs Law | 21–11 | 65.62% |
| Grumpy vs Leo | 18–13 | 58.06% |
| Grumpy vs Dragunov | 10–19 | 34.48% |
| Grumpy vs Jun | 18–11 | 62.07% |
| Grumpy vs Asuka | 16–11 | 59.26% |
| Grumpy vs Lee | 10–14 | 41.67% |
| Grumpy vs Azucena | 11–12 | 47.83% |
| Grumpy vs Armor King | 12–10 | 54.55% |
| Grumpy vs Steve | 10–11 | 47.62% |
| Grumpy vs Paul | 12–6 | 66.67% |
| Grumpy vs Lars | 9–8 | 52.94% |
| Grumpy vs Victor | 6–10 | 37.50% |
| Grumpy vs Xiaoyu | 11–4 | 73.33% |
| Grumpy vs Eddy | 9–6 | 60.00% |
| Grumpy vs Devil Jin | 6–8 | 42.86% |
| Grumpy vs Feng | 8–6 | 57.14% |
| Grumpy vs Nina | 8–6 | 57.14% |
| Grumpy vs Alisa | 6–6 | 50.00% |
| Grumpy vs Claudio | 9–3 | 75.00% |
| Grumpy vs Jack-8 | 4–7 | 36.36% |
| Grumpy vs Leroy | 7–4 | 63.64% |
| Grumpy vs Lidia | 7–4 | 63.64% |
| Grumpy vs Zafina | 4–5 | 44.44% |
| Grumpy vs Raven | 7–1 | 87.50% |
| Grumpy vs Kuma | 3–2 | 60.00% |
| Grumpy vs Heihachi | 4–1 | 80.00% |
| Grumpy vs Clive | 4–0 | 100.00% |
| Grumpy vs Anna | 3–1 | 75.00% |
| Grumpy vs Fahkumram | 1–2 | 33.33% |
| Grumpy vs Shaheen | 0–1 | 0.00% |
| Grumpy vs Miary Zo | 1–0 | 100.00% |
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.