| Jammyyy vs Kazuya | 111–149 | 42.69% |
| Jammyyy vs King | 98–138 | 41.53% |
| Jammyyy vs Jin | 86–116 | 42.57% |
| Jammyyy vs Reina | 83–115 | 41.92% |
| Jammyyy vs Hwoarang | 69–102 | 40.35% |
| Jammyyy vs Law | 69–95 | 42.07% |
| Jammyyy vs Bryan | 69–91 | 43.12% |
| Jammyyy vs Heihachi | 57–99 | 36.54% |
| Jammyyy vs Steve | 73–71 | 50.69% |
| Jammyyy vs Lili | 59–67 | 46.83% |
| Jammyyy vs Dragunov | 48–68 | 41.38% |
| Jammyyy vs Jun | 51–63 | 44.74% |
| Jammyyy vs Yoshimitsu | 49–60 | 44.95% |
| Jammyyy vs Devil Jin | 39–68 | 36.45% |
| Jammyyy vs Nina | 48–53 | 47.52% |
| Jammyyy vs Paul | 33–58 | 36.26% |
| Jammyyy vs Azucena | 43–45 | 48.86% |
| Jammyyy vs Xiaoyu | 40–47 | 45.98% |
| Jammyyy vs Lee | 24–58 | 29.27% |
| Jammyyy vs Clive | 32–48 | 40.00% |
| Jammyyy vs Anna | 29–38 | 43.28% |
| Jammyyy vs Alisa | 24–40 | 37.50% |
| Jammyyy vs Asuka | 18–44 | 29.03% |
| Jammyyy vs Victor | 34–27 | 55.74% |
| Jammyyy vs Feng | 16–36 | 30.77% |
| Jammyyy vs Armor King | 23–29 | 44.23% |
| Jammyyy vs Jack-8 | 20–31 | 39.22% |
| Jammyyy vs Eddy | 10–39 | 20.41% |
| Jammyyy vs Lidia | 20–19 | 51.28% |
| Jammyyy vs Lars | 16–20 | 44.44% |
| Jammyyy vs Raven | 18–12 | 60.00% |
| Jammyyy vs Leo | 12–16 | 42.86% |
| Jammyyy vs Leroy | 11–17 | 39.29% |
| Jammyyy vs Claudio | 6–17 | 26.09% |
| Jammyyy vs Fahkumram | 8–14 | 36.36% |
| Jammyyy vs Kuma | 4–13 | 23.53% |
| Jammyyy vs Zafina | 4–8 | 33.33% |
| Jammyyy vs Miary Zo | 8–4 | 66.67% |
| Jammyyy vs Shaheen | 4–2 | 66.67% |
| Jammyyy vs Panda | 2–4 | 33.33% |
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.