| Kayn vs Kazuya | 149–119 | 55.60% |
| Kayn vs Jin | 105–104 | 50.24% |
| Kayn vs Heihachi | 90–83 | 52.02% |
| Kayn vs Bryan | 98–59 | 62.42% |
| Kayn vs Reina | 111–46 | 70.70% |
| Kayn vs King | 74–60 | 55.22% |
| Kayn vs Armor King | 58–52 | 52.73% |
| Kayn vs Paul | 47–59 | 44.34% |
| Kayn vs Lili | 67–33 | 67.00% |
| Kayn vs Steve | 65–31 | 67.71% |
| Kayn vs Hwoarang | 38–53 | 41.76% |
| Kayn vs Dragunov | 43–45 | 48.86% |
| Kayn vs Clive | 46–41 | 52.87% |
| Kayn vs Law | 43–42 | 50.59% |
| Kayn vs Devil Jin | 52–31 | 62.65% |
| Kayn vs Lee | 41–26 | 61.19% |
| Kayn vs Yoshimitsu | 34–28 | 54.84% |
| Kayn vs Jun | 29–30 | 49.15% |
| Kayn vs Alisa | 24–32 | 42.86% |
| Kayn vs Lars | 21–32 | 39.62% |
| Kayn vs Asuka | 21–29 | 42.00% |
| Kayn vs Nina | 25–21 | 54.35% |
| Kayn vs Fahkumram | 21–25 | 45.65% |
| Kayn vs Feng | 20–22 | 47.62% |
| Kayn vs Xiaoyu | 18–23 | 43.90% |
| Kayn vs Claudio | 24–17 | 58.54% |
| Kayn vs Leo | 15–24 | 38.46% |
| Kayn vs Anna | 18–21 | 46.15% |
| Kayn vs Eddy | 16–22 | 42.11% |
| Kayn vs Azucena | 16–19 | 45.71% |
| Kayn vs Raven | 13–21 | 38.24% |
| Kayn vs Leroy | 23–8 | 74.19% |
| Kayn vs Shaheen | 14–16 | 46.67% |
| Kayn vs Victor | 16–14 | 53.33% |
| Kayn vs Lidia | 8–22 | 26.67% |
| Kayn vs Miary Zo | 14–16 | 46.67% |
| Kayn vs Jack-8 | 6–14 | 30.00% |
| Kayn vs Kuma | 6–12 | 33.33% |
| Kayn vs Zafina | 6–12 | 33.33% |
| Kayn vs Panda | 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.