| Rock Howard vs Jun | 13–10 | 56.52% |
| Rock Howard vs King | 7–11 | 38.89% |
| Rock Howard vs Eddy | 12–5 | 70.59% |
| Rock Howard vs Bryan | 10–3 | 76.92% |
| Rock Howard vs Kazuya | 5–7 | 41.67% |
| Rock Howard vs Lili | 6–6 | 50.00% |
| Rock Howard vs Steve | 1–8 | 11.11% |
| Rock Howard vs Dragunov | 4–5 | 44.44% |
| Rock Howard vs Claudio | 4–5 | 44.44% |
| Rock Howard vs Victor | 3–6 | 33.33% |
| Rock Howard vs Xiaoyu | 3–5 | 37.50% |
| Rock Howard vs Lars | 4–4 | 50.00% |
| Rock Howard vs Raven | 2–6 | 25.00% |
| Rock Howard vs Hwoarang | 6–1 | 85.71% |
| Rock Howard vs Jin | 3–4 | 42.86% |
| Rock Howard vs Devil Jin | 1–6 | 14.29% |
| Rock Howard vs Lee | 2–5 | 28.57% |
| Rock Howard vs Yoshimitsu | 2–4 | 33.33% |
| Rock Howard vs Jack-8 | 3–3 | 50.00% |
| Rock Howard vs Alisa | 5–1 | 83.33% |
| Rock Howard vs Nina | 2–4 | 33.33% |
| Rock Howard vs Law | 2–3 | 40.00% |
| Rock Howard vs Azucena | 3–2 | 60.00% |
| Rock Howard vs Paul | 2–2 | 50.00% |
| Rock Howard vs Feng | 0–4 | 0.00% |
| Rock Howard vs Leo | 2–2 | 50.00% |
| Rock Howard vs Reina | 3–1 | 75.00% |
| Rock Howard vs Asuka | 3–0 | 100.00% |
| Rock Howard vs Shaheen | 0–2 | 0.00% |
| Rock Howard vs Kuma | 1–1 | 50.00% |
| Rock Howard vs Panda | 0–2 | 0.00% |
| Rock Howard vs Lidia | 1–1 | 50.00% |
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.