| JeffAction vs Jin | 91–79 | 53.53% |
| JeffAction vs Kazuya | 86–76 | 53.09% |
| JeffAction vs King | 53–81 | 39.55% |
| JeffAction vs Bryan | 60–58 | 50.85% |
| JeffAction vs Law | 45–61 | 42.45% |
| JeffAction vs Lili | 57–46 | 55.34% |
| JeffAction vs Steve | 47–54 | 46.53% |
| JeffAction vs Heihachi | 47–54 | 46.53% |
| JeffAction vs Reina | 49–45 | 52.13% |
| JeffAction vs Hwoarang | 44–49 | 47.31% |
| JeffAction vs Paul | 28–52 | 35.00% |
| JeffAction vs Eddy | 39–35 | 52.70% |
| JeffAction vs Jun | 42–31 | 57.53% |
| JeffAction vs Dragunov | 36–36 | 50.00% |
| JeffAction vs Asuka | 32–26 | 55.17% |
| JeffAction vs Yoshimitsu | 24–23 | 51.06% |
| JeffAction vs Victor | 27–20 | 57.45% |
| JeffAction vs Azucena | 14–32 | 30.43% |
| JeffAction vs Nina | 20–24 | 45.45% |
| JeffAction vs Clive | 17–27 | 38.64% |
| JeffAction vs Feng | 20–23 | 46.51% |
| JeffAction vs Lars | 16–25 | 39.02% |
| JeffAction vs Alisa | 19–20 | 48.72% |
| JeffAction vs Devil Jin | 16–21 | 43.24% |
| JeffAction vs Xiaoyu | 20–16 | 55.56% |
| JeffAction vs Lee | 16–20 | 44.44% |
| JeffAction vs Armor King | 15–20 | 42.86% |
| JeffAction vs Jack-8 | 15–17 | 46.88% |
| JeffAction vs Lidia | 20–11 | 64.52% |
| JeffAction vs Leroy | 10–15 | 40.00% |
| JeffAction vs Anna | 11–11 | 50.00% |
| JeffAction vs Leo | 7–14 | 33.33% |
| JeffAction vs Fahkumram | 6–14 | 30.00% |
| JeffAction vs Kuma | 2–17 | 10.53% |
| JeffAction vs Raven | 10–9 | 52.63% |
| JeffAction vs Shaheen | 9–5 | 64.29% |
| JeffAction vs Claudio | 5–5 | 50.00% |
| JeffAction vs Miary Zo | 3–7 | 30.00% |
| JeffAction vs Zafina | 3–6 | 33.33% |
| JeffAction vs Panda | 1–4 | 20.00% |
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.