| Rock 89 vs Jin | 18–17 | 51.43% |
| Rock 89 vs King | 20–12 | 62.50% |
| Rock 89 vs Eddy | 13–13 | 50.00% |
| Rock 89 vs Kazuya | 15–8 | 65.22% |
| Rock 89 vs Reina | 12–11 | 52.17% |
| Rock 89 vs Hwoarang | 14–6 | 70.00% |
| Rock 89 vs Law | 7–6 | 53.85% |
| Rock 89 vs Paul | 4–8 | 33.33% |
| Rock 89 vs Xiaoyu | 7–3 | 70.00% |
| Rock 89 vs Feng | 5–5 | 50.00% |
| Rock 89 vs Lili | 6–4 | 60.00% |
| Rock 89 vs Dragunov | 4–6 | 40.00% |
| Rock 89 vs Bryan | 5–4 | 55.56% |
| Rock 89 vs Jun | 3–6 | 33.33% |
| Rock 89 vs Steve | 2–6 | 25.00% |
| Rock 89 vs Lee | 4–4 | 50.00% |
| Rock 89 vs Asuka | 5–2 | 71.43% |
| Rock 89 vs Victor | 2–5 | 28.57% |
| Rock 89 vs Claudio | 3–3 | 50.00% |
| Rock 89 vs Azucena | 3–3 | 50.00% |
| Rock 89 vs Alisa | 3–2 | 60.00% |
| Rock 89 vs Yoshimitsu | 2–2 | 50.00% |
| Rock 89 vs Leo | 2–2 | 50.00% |
| Rock 89 vs Lars | 2–2 | 50.00% |
| Rock 89 vs Raven | 2–2 | 50.00% |
| Rock 89 vs Jack-8 | 2–1 | 66.67% |
| Rock 89 vs Shaheen | 2–1 | 66.67% |
| Rock 89 vs Kuma | 2–1 | 66.67% |
| Rock 89 vs Leroy | 3–0 | 100.00% |
| Rock 89 vs Devil Jin | 1–1 | 50.00% |
| Rock 89 vs Nina | 1–1 | 50.00% |
| Rock 89 vs Panda | 2–0 | 100.00% |
| Rock 89 vs Zafina | 0–2 | 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.