| Jegg Heffley vs Heihachi | 6–8 | 42.86% |
| Jegg Heffley vs Jin | 5–8 | 38.46% |
| Jegg Heffley vs Bryan | 2–10 | 16.67% |
| Jegg Heffley vs Dragunov | 3–9 | 25.00% |
| Jegg Heffley vs King | 3–7 | 30.00% |
| Jegg Heffley vs Hwoarang | 4–6 | 40.00% |
| Jegg Heffley vs Steve | 6–3 | 66.67% |
| Jegg Heffley vs Jack-8 | 3–3 | 50.00% |
| Jegg Heffley vs Leo | 1–5 | 16.67% |
| Jegg Heffley vs Law | 0–5 | 0.00% |
| Jegg Heffley vs Paul | 0–4 | 0.00% |
| Jegg Heffley vs Feng | 2–2 | 50.00% |
| Jegg Heffley vs Leroy | 0–4 | 0.00% |
| Jegg Heffley vs Reina | 0–4 | 0.00% |
| Jegg Heffley vs Yoshimitsu | 1–2 | 33.33% |
| Jegg Heffley vs Kazuya | 1–2 | 33.33% |
| Jegg Heffley vs Devil Jin | 1–2 | 33.33% |
| Jegg Heffley vs Lili | 1–2 | 33.33% |
| Jegg Heffley vs Lars | 1–2 | 33.33% |
| Jegg Heffley vs Claudio | 2–1 | 66.67% |
| Jegg Heffley vs Nina | 1–2 | 33.33% |
| Jegg Heffley vs Kuma | 2–1 | 66.67% |
| Jegg Heffley vs Azucena | 0–3 | 0.00% |
| Jegg Heffley vs Lidia | 2–1 | 66.67% |
| Jegg Heffley vs Xiaoyu | 1–1 | 50.00% |
| Jegg Heffley vs Alisa | 0–2 | 0.00% |
| Jegg Heffley vs Eddy | 0–2 | 0.00% |
| Jegg Heffley vs Shaheen | 0–1 | 0.00% |
| Jegg Heffley vs Lee | 1–0 | 100.00% |
| Jegg Heffley vs Zafina | 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.