| Rocky Marciano vs Jin | 70–74 | 48.61% |
| Rocky Marciano vs King | 53–50 | 51.46% |
| Rocky Marciano vs Law | 57–45 | 55.88% |
| Rocky Marciano vs Kazuya | 47–54 | 46.53% |
| Rocky Marciano vs Hwoarang | 44–44 | 50.00% |
| Rocky Marciano vs Reina | 36–50 | 41.86% |
| Rocky Marciano vs Bryan | 47–36 | 56.63% |
| Rocky Marciano vs Steve | 42–39 | 51.85% |
| Rocky Marciano vs Eddy | 34–44 | 43.59% |
| Rocky Marciano vs Yoshimitsu | 26–41 | 38.81% |
| Rocky Marciano vs Dragunov | 22–42 | 34.38% |
| Rocky Marciano vs Lili | 33–30 | 52.38% |
| Rocky Marciano vs Victor | 20–38 | 34.48% |
| Rocky Marciano vs Lars | 27–30 | 47.37% |
| Rocky Marciano vs Paul | 22–31 | 41.51% |
| Rocky Marciano vs Jun | 18–33 | 35.29% |
| Rocky Marciano vs Alisa | 28–22 | 56.00% |
| Rocky Marciano vs Devil Jin | 26–23 | 53.06% |
| Rocky Marciano vs Lee | 18–23 | 43.90% |
| Rocky Marciano vs Asuka | 20–18 | 52.63% |
| Rocky Marciano vs Azucena | 17–20 | 45.95% |
| Rocky Marciano vs Xiaoyu | 10–24 | 29.41% |
| Rocky Marciano vs Feng | 17–15 | 53.12% |
| Rocky Marciano vs Leo | 14–8 | 63.64% |
| Rocky Marciano vs Nina | 7–15 | 31.82% |
| Rocky Marciano vs Leroy | 17–5 | 77.27% |
| Rocky Marciano vs Kuma | 7–11 | 38.89% |
| Rocky Marciano vs Claudio | 12–5 | 70.59% |
| Rocky Marciano vs Raven | 5–11 | 31.25% |
| Rocky Marciano vs Jack-8 | 4–11 | 26.67% |
| Rocky Marciano vs Shaheen | 4–6 | 40.00% |
| Rocky Marciano vs Panda | 5–5 | 50.00% |
| Rocky Marciano vs Zafina | 3–6 | 33.33% |
| Rocky Marciano vs Fahkumram | 4–1 | 80.00% |
| Rocky Marciano vs Lidia | 0–3 | 0.00% |
| Rocky Marciano vs Heihachi | 3–0 | 100.00% |
| Rocky Marciano vs Armor King | 0–3 | 0.00% |
| Rocky Marciano vs Miary Zo | 2–1 | 66.67% |
| Rocky Marciano vs Clive | 1–1 | 50.00% |
| Rocky Marciano vs Anna | 2–0 | 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.