| Rock vs King | 61–55 | 52.59% |
| Rock vs Jin | 38–36 | 51.35% |
| Rock vs Hwoarang | 22–38 | 36.67% |
| Rock vs Steve | 28–29 | 49.12% |
| Rock vs Kazuya | 21–29 | 42.00% |
| Rock vs Yoshimitsu | 25–21 | 54.35% |
| Rock vs Law | 16–26 | 38.10% |
| Rock vs Jun | 23–18 | 56.10% |
| Rock vs Bryan | 21–17 | 55.26% |
| Rock vs Asuka | 19–15 | 55.88% |
| Rock vs Reina | 22–12 | 64.71% |
| Rock vs Azucena | 13–20 | 39.39% |
| Rock vs Eddy | 12–21 | 36.36% |
| Rock vs Lili | 13–16 | 44.83% |
| Rock vs Dragunov | 13–16 | 44.83% |
| Rock vs Paul | 13–14 | 48.15% |
| Rock vs Lars | 15–11 | 57.69% |
| Rock vs Alisa | 9–14 | 39.13% |
| Rock vs Lee | 12–10 | 54.55% |
| Rock vs Victor | 12–9 | 57.14% |
| Rock vs Devil Jin | 8–12 | 40.00% |
| Rock vs Feng | 4–16 | 20.00% |
| Rock vs Heihachi | 5–15 | 25.00% |
| Rock vs Jack-8 | 7–10 | 41.18% |
| Rock vs Xiaoyu | 5–11 | 31.25% |
| Rock vs Shaheen | 7–6 | 53.85% |
| Rock vs Nina | 7–6 | 53.85% |
| Rock vs Kuma | 6–7 | 46.15% |
| Rock vs Leroy | 9–4 | 69.23% |
| Rock vs Clive | 4–8 | 33.33% |
| Rock vs Leo | 5–6 | 45.45% |
| Rock vs Claudio | 4–7 | 36.36% |
| Rock vs Raven | 6–4 | 60.00% |
| Rock vs Zafina | 2–7 | 22.22% |
| Rock vs Fahkumram | 4–5 | 44.44% |
| Rock vs Lidia | 2–1 | 66.67% |
| Rock vs Armor King | 1–2 | 33.33% |
| Rock vs Anna | 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.