| Grumpsters vs Reina | 16–16 | 50.00% |
| Grumpsters vs Jin | 11–20 | 35.48% |
| Grumpsters vs King | 11–15 | 42.31% |
| Grumpsters vs Eddy | 3–22 | 12.00% |
| Grumpsters vs Azucena | 14–8 | 63.64% |
| Grumpsters vs Steve | 8–9 | 47.06% |
| Grumpsters vs Nina | 7–10 | 41.18% |
| Grumpsters vs Kazuya | 4–10 | 28.57% |
| Grumpsters vs Asuka | 6–8 | 42.86% |
| Grumpsters vs Lili | 3–11 | 21.43% |
| Grumpsters vs Dragunov | 8–5 | 61.54% |
| Grumpsters vs Armor King | 6–7 | 46.15% |
| Grumpsters vs Xiaoyu | 2–10 | 16.67% |
| Grumpsters vs Lars | 6–6 | 50.00% |
| Grumpsters vs Paul | 6–4 | 60.00% |
| Grumpsters vs Law | 3–7 | 30.00% |
| Grumpsters vs Hwoarang | 3–7 | 30.00% |
| Grumpsters vs Feng | 3–7 | 30.00% |
| Grumpsters vs Lee | 3–7 | 30.00% |
| Grumpsters vs Zafina | 3–7 | 30.00% |
| Grumpsters vs Leo | 5–4 | 55.56% |
| Grumpsters vs Leroy | 1–7 | 12.50% |
| Grumpsters vs Victor | 2–6 | 25.00% |
| Grumpsters vs Fahkumram | 3–5 | 37.50% |
| Grumpsters vs Claudio | 2–5 | 28.57% |
| Grumpsters vs Kuma | 1–6 | 14.29% |
| Grumpsters vs Lidia | 4–3 | 57.14% |
| Grumpsters vs Bryan | 2–4 | 33.33% |
| Grumpsters vs Jun | 3–3 | 50.00% |
| Grumpsters vs Heihachi | 2–4 | 33.33% |
| Grumpsters vs Yoshimitsu | 1–4 | 20.00% |
| Grumpsters vs Jack-8 | 4–1 | 80.00% |
| Grumpsters vs Devil Jin | 3–2 | 60.00% |
| Grumpsters vs Anna | 3–1 | 75.00% |
| Grumpsters vs Shaheen | 2–0 | 100.00% |
| Grumpsters vs Clive | 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.