| Grumpo vs Steve | 10–16 | 38.46% |
| Grumpo vs Kazuya | 16–7 | 69.57% |
| Grumpo vs Jin | 14–7 | 66.67% |
| Grumpo vs Reina | 17–4 | 80.95% |
| Grumpo vs King | 11–7 | 61.11% |
| Grumpo vs Lars | 12–6 | 66.67% |
| Grumpo vs Yoshimitsu | 9–8 | 52.94% |
| Grumpo vs Law | 12–4 | 75.00% |
| Grumpo vs Asuka | 6–10 | 37.50% |
| Grumpo vs Lili | 12–2 | 85.71% |
| Grumpo vs Hwoarang | 4–9 | 30.77% |
| Grumpo vs Paul | 6–6 | 50.00% |
| Grumpo vs Xiaoyu | 6–6 | 50.00% |
| Grumpo vs Bryan | 4–8 | 33.33% |
| Grumpo vs Lee | 9–3 | 75.00% |
| Grumpo vs Lidia | 8–4 | 66.67% |
| Grumpo vs Leroy | 7–4 | 63.64% |
| Grumpo vs Jun | 5–5 | 50.00% |
| Grumpo vs Devil Jin | 3–5 | 37.50% |
| Grumpo vs Feng | 5–3 | 62.50% |
| Grumpo vs Nina | 4–3 | 57.14% |
| Grumpo vs Raven | 3–4 | 42.86% |
| Grumpo vs Eddy | 3–4 | 42.86% |
| Grumpo vs Dragunov | 3–3 | 50.00% |
| Grumpo vs Claudio | 1–5 | 16.67% |
| Grumpo vs Kuma | 2–4 | 33.33% |
| Grumpo vs Azucena | 4–2 | 66.67% |
| Grumpo vs Jack-8 | 0–5 | 0.00% |
| Grumpo vs Alisa | 3–2 | 60.00% |
| Grumpo vs Zafina | 3–2 | 60.00% |
| Grumpo vs Victor | 3–2 | 60.00% |
| Grumpo vs Leo | 2–2 | 50.00% |
| Grumpo vs Heihachi | 2–2 | 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.