| Jack_Key_Chain vs King | 200–147 | 57.64% |
| Jack_Key_Chain vs Bryan | 187–115 | 61.92% |
| Jack_Key_Chain vs Jin | 137–114 | 54.58% |
| Jack_Key_Chain vs Dragunov | 156–76 | 67.24% |
| Jack_Key_Chain vs Law | 130–81 | 61.61% |
| Jack_Key_Chain vs Jack-8 | 119–70 | 62.96% |
| Jack_Key_Chain vs Eddy | 101–76 | 57.06% |
| Jack_Key_Chain vs Kazuya | 101–71 | 58.72% |
| Jack_Key_Chain vs Nina | 94–47 | 66.67% |
| Jack_Key_Chain vs Hwoarang | 85–53 | 61.59% |
| Jack_Key_Chain vs Yoshimitsu | 83–53 | 61.03% |
| Jack_Key_Chain vs Devil Jin | 68–63 | 51.91% |
| Jack_Key_Chain vs Asuka | 62–68 | 47.69% |
| Jack_Key_Chain vs Steve | 72–53 | 57.60% |
| Jack_Key_Chain vs Raven | 78–47 | 62.40% |
| Jack_Key_Chain vs Fahkumram | 66–59 | 52.80% |
| Jack_Key_Chain vs Feng | 61–56 | 52.14% |
| Jack_Key_Chain vs Alisa | 65–52 | 55.56% |
| Jack_Key_Chain vs Armor King | 81–36 | 69.23% |
| Jack_Key_Chain vs Victor | 71–38 | 65.14% |
| Jack_Key_Chain vs Xiaoyu | 49–49 | 50.00% |
| Jack_Key_Chain vs Lidia | 51–40 | 56.04% |
| Jack_Key_Chain vs Paul | 61–28 | 68.54% |
| Jack_Key_Chain vs Heihachi | 53–33 | 61.63% |
| Jack_Key_Chain vs Claudio | 45–39 | 53.57% |
| Jack_Key_Chain vs Reina | 49–35 | 58.33% |
| Jack_Key_Chain vs Lars | 57–20 | 74.03% |
| Jack_Key_Chain vs Lili | 32–37 | 46.38% |
| Jack_Key_Chain vs Jun | 43–23 | 65.15% |
| Jack_Key_Chain vs Clive | 30–32 | 48.39% |
| Jack_Key_Chain vs Anna | 39–20 | 66.10% |
| Jack_Key_Chain vs Leo | 27–27 | 50.00% |
| Jack_Key_Chain vs Lee | 36–16 | 69.23% |
| Jack_Key_Chain vs Shaheen | 33–17 | 66.00% |
| Jack_Key_Chain vs Azucena | 23–9 | 71.88% |
| Jack_Key_Chain vs Leroy | 20–11 | 64.52% |
| Jack_Key_Chain vs Zafina | 15–13 | 53.57% |
| Jack_Key_Chain vs Panda | 13–13 | 50.00% |
| Jack_Key_Chain vs Kuma | 16–3 | 84.21% |
| Jack_Key_Chain vs Miary Zo | 3–1 | 75.00% |
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.