| Jamm vs Jin | 151–182 | 45.35% |
| Jamm vs Kazuya | 149–182 | 45.02% |
| Jamm vs King | 158–117 | 57.45% |
| Jamm vs Bryan | 92–149 | 38.17% |
| Jamm vs Hwoarang | 124–115 | 51.88% |
| Jamm vs Reina | 92–145 | 38.82% |
| Jamm vs Law | 68–108 | 38.64% |
| Jamm vs Steve | 94–77 | 54.97% |
| Jamm vs Dragunov | 76–86 | 46.91% |
| Jamm vs Yoshimitsu | 69–90 | 43.40% |
| Jamm vs Lili | 65–90 | 41.94% |
| Jamm vs Paul | 63–91 | 40.91% |
| Jamm vs Eddy | 61–78 | 43.88% |
| Jamm vs Heihachi | 47–81 | 36.72% |
| Jamm vs Asuka | 43–80 | 34.96% |
| Jamm vs Devil Jin | 52–69 | 42.98% |
| Jamm vs Alisa | 44–71 | 38.26% |
| Jamm vs Xiaoyu | 40–66 | 37.74% |
| Jamm vs Nina | 52–53 | 49.52% |
| Jamm vs Jun | 48–50 | 48.98% |
| Jamm vs Azucena | 43–54 | 44.33% |
| Jamm vs Lee | 40–51 | 43.96% |
| Jamm vs Victor | 39–52 | 42.86% |
| Jamm vs Lars | 30–53 | 36.14% |
| Jamm vs Lidia | 38–43 | 46.91% |
| Jamm vs Feng | 36–44 | 45.00% |
| Jamm vs Claudio | 22–40 | 35.48% |
| Jamm vs Jack-8 | 26–31 | 45.61% |
| Jamm vs Leo | 27–30 | 47.37% |
| Jamm vs Kuma | 22–34 | 39.29% |
| Jamm vs Leroy | 18–29 | 38.30% |
| Jamm vs Raven | 21–26 | 44.68% |
| Jamm vs Shaheen | 15–20 | 42.86% |
| Jamm vs Zafina | 12–16 | 42.86% |
| Jamm vs Panda | 7–7 | 50.00% |
| Jamm vs Armor King | 2–1 | 66.67% |
| Jamm vs Clive | 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.