| Grumbus Grusk vs Reina | 10–10 | 50.00% |
| Grumbus Grusk vs King | 5–12 | 29.41% |
| Grumbus Grusk vs Lili | 9–7 | 56.25% |
| Grumbus Grusk vs Bryan | 7–8 | 46.67% |
| Grumbus Grusk vs Jin | 3–8 | 27.27% |
| Grumbus Grusk vs Dragunov | 5–6 | 45.45% |
| Grumbus Grusk vs Eddy | 2–9 | 18.18% |
| Grumbus Grusk vs Hwoarang | 4–3 | 57.14% |
| Grumbus Grusk vs Lars | 1–6 | 14.29% |
| Grumbus Grusk vs Azucena | 1–6 | 14.29% |
| Grumbus Grusk vs Xiaoyu | 2–4 | 33.33% |
| Grumbus Grusk vs Law | 2–3 | 40.00% |
| Grumbus Grusk vs Kazuya | 1–4 | 20.00% |
| Grumbus Grusk vs Asuka | 0–5 | 0.00% |
| Grumbus Grusk vs Zafina | 3–2 | 60.00% |
| Grumbus Grusk vs Victor | 2–3 | 40.00% |
| Grumbus Grusk vs Raven | 4–1 | 80.00% |
| Grumbus Grusk vs Steve | 4–0 | 100.00% |
| Grumbus Grusk vs Nina | 2–2 | 50.00% |
| Grumbus Grusk vs Lee | 2–2 | 50.00% |
| Grumbus Grusk vs Jun | 1–3 | 25.00% |
| Grumbus Grusk vs Devil Jin | 0–3 | 0.00% |
| Grumbus Grusk vs Leroy | 2–1 | 66.67% |
| Grumbus Grusk vs Yoshimitsu | 0–2 | 0.00% |
| Grumbus Grusk vs Feng | 1–1 | 50.00% |
| Grumbus Grusk vs Leo | 1–1 | 50.00% |
| Grumbus Grusk vs Panda | 0–2 | 0.00% |
| Grumbus Grusk vs Paul | 0–1 | 0.00% |
| Grumbus Grusk vs Heihachi | 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.