| Kaster vs Kazuya | 197–207 | 48.76% |
| Kaster vs King | 154–234 | 39.69% |
| Kaster vs Steve | 193–183 | 51.33% |
| Kaster vs Jin | 182–191 | 48.79% |
| Kaster vs Reina | 171–145 | 54.11% |
| Kaster vs Bryan | 122–153 | 44.36% |
| Kaster vs Dragunov | 116–156 | 42.65% |
| Kaster vs Law | 84–133 | 38.71% |
| Kaster vs Heihachi | 103–112 | 47.91% |
| Kaster vs Lili | 87–125 | 41.04% |
| Kaster vs Asuka | 101–107 | 48.56% |
| Kaster vs Paul | 87–112 | 43.72% |
| Kaster vs Hwoarang | 82–91 | 47.40% |
| Kaster vs Clive | 72–96 | 42.86% |
| Kaster vs Azucena | 83–84 | 49.70% |
| Kaster vs Xiaoyu | 87–73 | 54.37% |
| Kaster vs Eddy | 69–87 | 44.23% |
| Kaster vs Lars | 66–76 | 46.48% |
| Kaster vs Devil Jin | 61–80 | 43.26% |
| Kaster vs Feng | 57–84 | 40.43% |
| Kaster vs Yoshimitsu | 68–64 | 51.52% |
| Kaster vs Nina | 71–60 | 54.20% |
| Kaster vs Jun | 67–60 | 52.76% |
| Kaster vs Lidia | 67–60 | 52.76% |
| Kaster vs Victor | 52–64 | 44.83% |
| Kaster vs Lee | 48–63 | 43.24% |
| Kaster vs Anna | 48–43 | 52.75% |
| Kaster vs Jack-8 | 32–53 | 37.65% |
| Kaster vs Raven | 38–43 | 46.91% |
| Kaster vs Leo | 36–40 | 47.37% |
| Kaster vs Claudio | 36–34 | 51.43% |
| Kaster vs Leroy | 31–36 | 46.27% |
| Kaster vs Alisa | 28–37 | 43.08% |
| Kaster vs Fahkumram | 26–34 | 43.33% |
| Kaster vs Kuma | 23–36 | 38.98% |
| Kaster vs Zafina | 24–22 | 52.17% |
| Kaster vs Shaheen | 17–25 | 40.48% |
| Kaster vs Panda | 7–14 | 33.33% |
| Kaster vs Armor King | 1–2 | 33.33% |
| Kaster vs Miary Zo | 1–2 | 33.33% |
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.