| Romello vs Steve | 30–44 | 40.54% |
| Romello vs Miary Zo | 11–34 | 24.44% |
| Romello vs King | 20–24 | 45.45% |
| Romello vs Kazuya | 14–23 | 37.84% |
| Romello vs Bryan | 12–19 | 38.71% |
| Romello vs Reina | 15–16 | 48.39% |
| Romello vs Hwoarang | 12–18 | 40.00% |
| Romello vs Azucena | 17–12 | 58.62% |
| Romello vs Clive | 13–14 | 48.15% |
| Romello vs Asuka | 12–14 | 46.15% |
| Romello vs Dragunov | 12–14 | 46.15% |
| Romello vs Jun | 13–13 | 50.00% |
| Romello vs Lili | 11–14 | 44.00% |
| Romello vs Eddy | 11–14 | 44.00% |
| Romello vs Leroy | 10–13 | 43.48% |
| Romello vs Jin | 5–17 | 22.73% |
| Romello vs Nina | 8–13 | 38.10% |
| Romello vs Law | 9–11 | 45.00% |
| Romello vs Victor | 7–13 | 35.00% |
| Romello vs Yoshimitsu | 5–14 | 26.32% |
| Romello vs Lee | 7–12 | 36.84% |
| Romello vs Lidia | 11–8 | 57.89% |
| Romello vs Lars | 9–7 | 56.25% |
| Romello vs Heihachi | 8–8 | 50.00% |
| Romello vs Armor King | 7–9 | 43.75% |
| Romello vs Devil Jin | 9–5 | 64.29% |
| Romello vs Fahkumram | 8–5 | 61.54% |
| Romello vs Kuma | 6–6 | 50.00% |
| Romello vs Jack-8 | 1–9 | 10.00% |
| Romello vs Raven | 6–4 | 60.00% |
| Romello vs Anna | 6–3 | 66.67% |
| Romello vs Leo | 2–5 | 28.57% |
| Romello vs Alisa | 3–4 | 42.86% |
| Romello vs Paul | 2–4 | 33.33% |
| Romello vs Xiaoyu | 3–3 | 50.00% |
| Romello vs Claudio | 2–4 | 33.33% |
| Romello vs Panda | 1–5 | 16.67% |
| Romello vs Shaheen | 2–1 | 66.67% |
| Romello vs Feng | 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.