| grumos vs Reina | 20–32 | 38.46% |
| grumos vs Heihachi | 9–31 | 22.50% |
| grumos vs King | 7–29 | 19.44% |
| grumos vs Kazuya | 11–23 | 32.35% |
| grumos vs Steve | 12–16 | 42.86% |
| grumos vs Jin | 1–25 | 3.85% |
| grumos vs Law | 3–22 | 12.00% |
| grumos vs Hwoarang | 7–17 | 29.17% |
| grumos vs Lili | 4–20 | 16.67% |
| grumos vs Yoshimitsu | 5–14 | 26.32% |
| grumos vs Eddy | 1–16 | 5.88% |
| grumos vs Asuka | 5–10 | 33.33% |
| grumos vs Bryan | 4–9 | 30.77% |
| grumos vs Claudio | 6–6 | 50.00% |
| grumos vs Jun | 2–10 | 16.67% |
| grumos vs Lidia | 3–9 | 25.00% |
| grumos vs Dragunov | 6–5 | 54.55% |
| grumos vs Azucena | 5–5 | 50.00% |
| grumos vs Alisa | 3–6 | 33.33% |
| grumos vs Leo | 1–7 | 12.50% |
| grumos vs Lee | 3–4 | 42.86% |
| grumos vs Kuma | 0–7 | 0.00% |
| grumos vs Leroy | 4–3 | 57.14% |
| grumos vs Victor | 0–7 | 0.00% |
| grumos vs Xiaoyu | 4–2 | 66.67% |
| grumos vs Paul | 2–3 | 40.00% |
| grumos vs Devil Jin | 1–4 | 20.00% |
| grumos vs Nina | 0–5 | 0.00% |
| grumos vs Feng | 1–3 | 25.00% |
| grumos vs Raven | 2–2 | 50.00% |
| grumos vs Lars | 1–2 | 33.33% |
| grumos vs Jack-8 | 0–2 | 0.00% |
| grumos vs Shaheen | 0–2 | 0.00% |
| grumos vs Panda | 0–2 | 0.00% |
| grumos vs Fahkumram | 2–0 | 100.00% |
| grumos vs Clive | 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.