| Grollo vs Reina | 5–3 | 62.50% |
| Grollo vs Eddy | 1–5 | 16.67% |
| Grollo vs Jin | 1–2 | 33.33% |
| Grollo vs Steve | 2–1 | 66.67% |
| Grollo vs Paul | 0–2 | 0.00% |
| Grollo vs Asuka | 0–2 | 0.00% |
| Grollo vs Devil Jin | 0–2 | 0.00% |
| Grollo vs Dragunov | 0–2 | 0.00% |
| Grollo vs Leroy | 0–2 | 0.00% |
| Grollo vs Azucena | 1–1 | 50.00% |
| Grollo vs Victor | 1–1 | 50.00% |
| Grollo vs Law | 1–0 | 100.00% |
| Grollo vs King | 1–0 | 100.00% |
| Grollo vs Kazuya | 0–1 | 0.00% |
| Grollo vs Jack-8 | 0–1 | 0.00% |
| Grollo vs Lili | 1–0 | 100.00% |
| Grollo vs Lars | 1–0 | 100.00% |
| Grollo vs Jun | 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.