| Grumpo vs Reina | 17–4 | 80.95% |
| Grumpo vs Kazuya | 13–4 | 76.47% |
| Grumpo vs King | 11–5 | 68.75% |
| Grumpo vs Lars | 11–4 | 73.33% |
| Grumpo vs Yoshimitsu | 8–6 | 57.14% |
| Grumpo vs Steve | 7–7 | 50.00% |
| Grumpo vs Asuka | 6–8 | 42.86% |
| Grumpo vs Lili | 12–2 | 85.71% |
| Grumpo vs Law | 9–3 | 75.00% |
| Grumpo vs Xiaoyu | 6–6 | 50.00% |
| Grumpo vs Bryan | 4–8 | 33.33% |
| Grumpo vs Lidia | 8–4 | 66.67% |
| Grumpo vs Paul | 4–6 | 40.00% |
| Grumpo vs Jin | 9–1 | 90.00% |
| Grumpo vs Hwoarang | 4–5 | 44.44% |
| Grumpo vs Feng | 5–3 | 62.50% |
| Grumpo vs Lee | 5–3 | 62.50% |
| Grumpo vs Jun | 3–5 | 37.50% |
| Grumpo vs Nina | 4–3 | 57.14% |
| Grumpo vs Eddy | 3–4 | 42.86% |
| Grumpo vs Azucena | 4–2 | 66.67% |
| Grumpo vs Jack-8 | 0–5 | 0.00% |
| Grumpo vs Devil Jin | 2–3 | 40.00% |
| Grumpo vs Alisa | 3–2 | 60.00% |
| Grumpo vs Claudio | 1–4 | 20.00% |
| Grumpo vs Leroy | 3–2 | 60.00% |
| Grumpo vs Dragunov | 3–1 | 75.00% |
| Grumpo vs Kuma | 2–2 | 50.00% |
| Grumpo vs Raven | 1–3 | 25.00% |
| Grumpo vs Leo | 1–2 | 33.33% |
| Grumpo vs Zafina | 2–1 | 66.67% |
| Grumpo vs Victor | 2–0 | 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.