| Jammy420 vs Kazuya | 3–8 | 27.27% |
| Jammy420 vs Nina | 1–10 | 9.09% |
| Jammy420 vs Law | 2–8 | 20.00% |
| Jammy420 vs King | 3–7 | 30.00% |
| Jammy420 vs Yoshimitsu | 8–2 | 80.00% |
| Jammy420 vs Hwoarang | 5–4 | 55.56% |
| Jammy420 vs Jin | 4–5 | 44.44% |
| Jammy420 vs Asuka | 4–5 | 44.44% |
| Jammy420 vs Reina | 7–2 | 77.78% |
| Jammy420 vs Eddy | 1–7 | 12.50% |
| Jammy420 vs Azucena | 4–3 | 57.14% |
| Jammy420 vs Steve | 2–4 | 33.33% |
| Jammy420 vs Lars | 3–3 | 50.00% |
| Jammy420 vs Paul | 1–4 | 20.00% |
| Jammy420 vs Dragunov | 3–2 | 60.00% |
| Jammy420 vs Lili | 2–1 | 66.67% |
| Jammy420 vs Leo | 2–1 | 66.67% |
| Jammy420 vs Alisa | 2–1 | 66.67% |
| Jammy420 vs Bryan | 2–0 | 100.00% |
| Jammy420 vs Devil Jin | 0–2 | 0.00% |
| Jammy420 vs Feng | 0–2 | 0.00% |
| Jammy420 vs Victor | 0–2 | 0.00% |
| Jammy420 vs Raven | 1–1 | 50.00% |
| Jammy420 vs Lidia | 0–2 | 0.00% |
| Jammy420 vs Xiaoyu | 1–0 | 100.00% |
| Jammy420 vs Claudio | 0–1 | 0.00% |
| Jammy420 vs Zafina | 0–1 | 0.00% |
| Jammy420 vs Leroy | 1–0 | 100.00% |
| Jammy420 vs Jun | 0–1 | 0.00% |
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.