| John F Ketamine vs Hwoarang | 300–221 | 57.58% |
| John F Ketamine vs Bryan | 280–241 | 53.74% |
| John F Ketamine vs Jin | 252–201 | 55.63% |
| John F Ketamine vs Steve | 231–201 | 53.47% |
| John F Ketamine vs Reina | 217–188 | 53.58% |
| John F Ketamine vs Dragunov | 256–139 | 64.81% |
| John F Ketamine vs Kazuya | 236–116 | 67.05% |
| John F Ketamine vs Law | 204–143 | 58.79% |
| John F Ketamine vs Lili | 174–170 | 50.58% |
| John F Ketamine vs King | 216–127 | 62.97% |
| John F Ketamine vs Yoshimitsu | 173–155 | 52.74% |
| John F Ketamine vs Lee | 180–146 | 55.21% |
| John F Ketamine vs Heihachi | 167–119 | 58.39% |
| John F Ketamine vs Claudio | 156–126 | 55.32% |
| John F Ketamine vs Asuka | 157–120 | 56.68% |
| John F Ketamine vs Devil Jin | 149–128 | 53.79% |
| John F Ketamine vs Lars | 164–111 | 59.64% |
| John F Ketamine vs Paul | 162–102 | 61.36% |
| John F Ketamine vs Victor | 130–132 | 49.62% |
| John F Ketamine vs Xiaoyu | 145–108 | 57.31% |
| John F Ketamine vs Azucena | 125–124 | 50.20% |
| John F Ketamine vs Jun | 147–96 | 60.49% |
| John F Ketamine vs Lidia | 110–112 | 49.55% |
| John F Ketamine vs Clive | 127–95 | 57.21% |
| John F Ketamine vs Nina | 142–77 | 64.84% |
| John F Ketamine vs Alisa | 124–88 | 58.49% |
| John F Ketamine vs Feng | 113–90 | 55.67% |
| John F Ketamine vs Leo | 130–69–1 | 65.33% |
| John F Ketamine vs Eddy | 120–75 | 61.54% |
| John F Ketamine vs Raven | 117–76 | 60.62% |
| John F Ketamine vs Zafina | 117–74 | 61.26% |
| John F Ketamine vs Leroy | 106–79 | 57.30% |
| John F Ketamine vs Jack-8 | 104–79 | 56.83% |
| John F Ketamine vs Kuma | 94–74 | 55.95% |
| John F Ketamine vs Armor King | 104–61 | 63.03% |
| John F Ketamine vs Fahkumram | 97–63–1 | 60.62% |
| John F Ketamine vs Shaheen | 89–60 | 59.73% |
| John F Ketamine vs Anna | 78–66 | 54.17% |
| John F Ketamine vs Miary Zo | 56–42 | 57.14% |
| John F Ketamine vs Panda | 45–50 | 47.37% |
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.