| Rocksteady vs King | 26–6 | 81.25% |
| Rocksteady vs Kazuya | 9–11 | 45.00% |
| Rocksteady vs Azucena | 16–4 | 80.00% |
| Rocksteady vs Armor King | 14–6 | 70.00% |
| Rocksteady vs Steve | 12–6 | 66.67% |
| Rocksteady vs Heihachi | 10–7 | 58.82% |
| Rocksteady vs Jin | 9–7 | 56.25% |
| Rocksteady vs Clive | 9–5 | 64.29% |
| Rocksteady vs Fahkumram | 10–4 | 71.43% |
| Rocksteady vs Lee | 6–7 | 46.15% |
| Rocksteady vs Hwoarang | 4–7 | 36.36% |
| Rocksteady vs Lili | 7–2 | 77.78% |
| Rocksteady vs Dragunov | 6–3 | 66.67% |
| Rocksteady vs Jun | 4–5 | 44.44% |
| Rocksteady vs Law | 8–0 | 100.00% |
| Rocksteady vs Paul | 5–1 | 83.33% |
| Rocksteady vs Yoshimitsu | 4–2 | 66.67% |
| Rocksteady vs Alisa | 5–1 | 83.33% |
| Rocksteady vs Shaheen | 4–1 | 80.00% |
| Rocksteady vs Reina | 3–2 | 60.00% |
| Rocksteady vs Xiaoyu | 2–2 | 50.00% |
| Rocksteady vs Bryan | 1–3 | 25.00% |
| Rocksteady vs Feng | 3–1 | 75.00% |
| Rocksteady vs Lars | 3–1 | 75.00% |
| Rocksteady vs Claudio | 3–1 | 75.00% |
| Rocksteady vs Nina | 3–1 | 75.00% |
| Rocksteady vs Leo | 3–0 | 100.00% |
| Rocksteady vs Anna | 1–2 | 33.33% |
| Rocksteady vs Devil Jin | 2–0 | 100.00% |
| Rocksteady vs Kuma | 0–2 | 0.00% |
| Rocksteady vs Panda | 1–0 | 100.00% |
| Rocksteady vs Zafina | 0–1 | 0.00% |
| Rocksteady vs Eddy | 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.