| JamRock vs Jin | 8–18 | 30.77% |
| JamRock vs Dragunov | 13–4 | 76.47% |
| JamRock vs Kazuya | 11–5 | 68.75% |
| JamRock vs Paul | 6–8 | 42.86% |
| JamRock vs Reina | 6–8 | 42.86% |
| JamRock vs Feng | 6–6 | 50.00% |
| JamRock vs King | 8–3 | 72.73% |
| JamRock vs Nina | 3–8 | 27.27% |
| JamRock vs Hwoarang | 4–5 | 44.44% |
| JamRock vs Steve | 5–3 | 62.50% |
| JamRock vs Leo | 6–2 | 75.00% |
| JamRock vs Jun | 4–4 | 50.00% |
| JamRock vs Law | 3–4 | 42.86% |
| JamRock vs Jack-8 | 3–4 | 42.86% |
| JamRock vs Claudio | 3–4 | 42.86% |
| JamRock vs Lars | 6–0 | 100.00% |
| JamRock vs Yoshimitsu | 1–4 | 20.00% |
| JamRock vs Xiaoyu | 4–1 | 80.00% |
| JamRock vs Lili | 3–2 | 60.00% |
| JamRock vs Lee | 1–4 | 20.00% |
| JamRock vs Azucena | 2–3 | 40.00% |
| JamRock vs Victor | 4–1 | 80.00% |
| JamRock vs Bryan | 1–3 | 25.00% |
| JamRock vs Shaheen | 3–1 | 75.00% |
| JamRock vs Kuma | 1–2 | 33.33% |
| JamRock vs Leroy | 2–1 | 66.67% |
| JamRock vs Asuka | 1–1 | 50.00% |
| JamRock vs Zafina | 1–1 | 50.00% |
| JamRock vs Raven | 2–0 | 100.00% |
| JamRock vs Alisa | 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.