| Jaffy vs King | 21–23 | 47.73% |
| Jaffy vs Jin | 19–22 | 46.34% |
| Jaffy vs Steve | 13–19 | 40.62% |
| Jaffy vs Hwoarang | 11–14 | 44.00% |
| Jaffy vs Dragunov | 12–11 | 52.17% |
| Jaffy vs Miary Zo | 10–11 | 47.62% |
| Jaffy vs Reina | 8–12 | 40.00% |
| Jaffy vs Armor King | 9–9 | 50.00% |
| Jaffy vs Eddy | 1–15 | 6.25% |
| Jaffy vs Yoshimitsu | 8–7 | 53.33% |
| Jaffy vs Bryan | 6–9 | 40.00% |
| Jaffy vs Clive | 7–8 | 46.67% |
| Jaffy vs Law | 7–7 | 50.00% |
| Jaffy vs Jun | 3–11 | 21.43% |
| Jaffy vs Kazuya | 5–8 | 38.46% |
| Jaffy vs Nina | 7–6 | 53.85% |
| Jaffy vs Paul | 8–4 | 66.67% |
| Jaffy vs Lee | 4–7 | 36.36% |
| Jaffy vs Azucena | 3–8 | 27.27% |
| Jaffy vs Feng | 6–4 | 60.00% |
| Jaffy vs Lili | 3–7 | 30.00% |
| Jaffy vs Devil Jin | 5–4 | 55.56% |
| Jaffy vs Lars | 3–6 | 33.33% |
| Jaffy vs Heihachi | 2–7 | 22.22% |
| Jaffy vs Fahkumram | 5–3 | 62.50% |
| Jaffy vs Asuka | 1–6 | 14.29% |
| Jaffy vs Jack-8 | 2–3 | 40.00% |
| Jaffy vs Alisa | 3–2 | 60.00% |
| Jaffy vs Victor | 2–3 | 40.00% |
| Jaffy vs Zafina | 4–0 | 100.00% |
| Jaffy vs Claudio | 2–1 | 66.67% |
| Jaffy vs Shaheen | 1–2 | 33.33% |
| Jaffy vs Kuma | 0–2 | 0.00% |
| Jaffy vs Lidia | 1–1 | 50.00% |
| Jaffy vs Leo | 0–1 | 0.00% |
| Jaffy vs Panda | 0–1 | 0.00% |
| Jaffy vs Leroy | 1–0 | 100.00% |
| Jaffy vs Anna | 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.