| Jaffan vs Jack-8 | 2–12 | 14.29% |
| Jaffan vs Devil Jin | 2–6 | 25.00% |
| Jaffan vs Lars | 5–3 | 62.50% |
| Jaffan vs King | 1–6 | 14.29% |
| Jaffan vs Victor | 2–2 | 50.00% |
| Jaffan vs Law | 1–2 | 33.33% |
| Jaffan vs Alisa | 2–1 | 66.67% |
| Jaffan vs Nina | 2–1 | 66.67% |
| Jaffan vs Yoshimitsu | 0–2 | 0.00% |
| Jaffan vs Hwoarang | 0–2 | 0.00% |
| Jaffan vs Jin | 0–2 | 0.00% |
| Jaffan vs Feng | 0–2 | 0.00% |
| Jaffan vs Dragunov | 0–2 | 0.00% |
| Jaffan vs Reina | 0–2 | 0.00% |
| Jaffan vs Steve | 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.