| Jamm vs King | 4–6 | 40.00% |
| Jamm vs Hwoarang | 2–3 | 40.00% |
| Jamm vs Jin | 0–5 | 0.00% |
| Jamm vs Lee | 2–3 | 40.00% |
| Jamm vs Armor King | 1–4 | 20.00% |
| Jamm vs Leo | 2–2 | 50.00% |
| Jamm vs Law | 1–2 | 33.33% |
| Jamm vs Bryan | 2–1 | 66.67% |
| Jamm vs Kazuya | 1–2 | 33.33% |
| Jamm vs Leroy | 1–2 | 33.33% |
| Jamm vs Xiaoyu | 0–2 | 0.00% |
| Jamm vs Steve | 1–1 | 50.00% |
| Jamm vs Dragunov | 2–0 | 100.00% |
| Jamm vs Lars | 0–2 | 0.00% |
| Jamm vs Kuma | 2–0 | 100.00% |
| Jamm vs Lidia | 0–2 | 0.00% |
| Jamm vs Heihachi | 0–2 | 0.00% |
| Jamm vs Devil Jin | 0–1 | 0.00% |
| Jamm vs Nina | 0–1 | 0.00% |
| Jamm vs Reina | 0–1 | 0.00% |
| Jamm vs Eddy | 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.