| KatanaYoichi vs Kazuya | 263–193 | 57.68% |
| KatanaYoichi vs Jin | 253–161 | 61.11% |
| KatanaYoichi vs Dragunov | 187–158 | 54.20% |
| KatanaYoichi vs Bryan | 191–141 | 57.53% |
| KatanaYoichi vs King | 183–135 | 57.55% |
| KatanaYoichi vs Reina | 211–95 | 68.95% |
| KatanaYoichi vs Hwoarang | 164–140 | 53.95% |
| KatanaYoichi vs Heihachi | 177–126 | 58.42% |
| KatanaYoichi vs Paul | 147–116 | 55.89% |
| KatanaYoichi vs Steve | 174–87 | 66.67% |
| KatanaYoichi vs Law | 144–109 | 56.92% |
| KatanaYoichi vs Devil Jin | 134–100 | 57.26% |
| KatanaYoichi vs Lee | 133–96 | 58.08% |
| KatanaYoichi vs Lili | 116–112 | 50.88% |
| KatanaYoichi vs Nina | 125–90 | 58.14% |
| KatanaYoichi vs Yoshimitsu | 115–83 | 58.08% |
| KatanaYoichi vs Asuka | 88–100 | 46.81% |
| KatanaYoichi vs Lidia | 127–56 | 69.40% |
| KatanaYoichi vs Feng | 92–84 | 52.27% |
| KatanaYoichi vs Azucena | 103–63 | 62.05% |
| KatanaYoichi vs Lars | 91–71 | 56.17% |
| KatanaYoichi vs Leo | 92–67–1 | 57.86% |
| KatanaYoichi vs Claudio | 77–68 | 53.10% |
| KatanaYoichi vs Alisa | 80–59 | 57.55% |
| KatanaYoichi vs Raven | 69–66 | 51.11% |
| KatanaYoichi vs Jun | 63–69 | 47.73% |
| KatanaYoichi vs Victor | 83–45 | 64.84% |
| KatanaYoichi vs Leroy | 71–53 | 57.26% |
| KatanaYoichi vs Eddy | 66–57 | 53.66% |
| KatanaYoichi vs Zafina | 59–62 | 48.76% |
| KatanaYoichi vs Jack-8 | 46–74 | 38.33% |
| KatanaYoichi vs Fahkumram | 68–51 | 57.14% |
| KatanaYoichi vs Clive | 61–51 | 54.46% |
| KatanaYoichi vs Shaheen | 51–52 | 49.51% |
| KatanaYoichi vs Armor King | 49–38 | 56.32% |
| KatanaYoichi vs Xiaoyu | 36–46 | 43.90% |
| KatanaYoichi vs Kuma | 24–53 | 31.17% |
| KatanaYoichi vs Anna | 23–26 | 46.94% |
| KatanaYoichi vs Miary Zo | 16–12 | 57.14% |
| KatanaYoichi vs Panda | 9–10 | 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.