| Koshi Slevin vs Reina | 6–6 | 50.00% |
| Koshi Slevin vs Jin | 4–6 | 40.00% |
| Koshi Slevin vs King | 4–5 | 44.44% |
| Koshi Slevin vs Jun | 0–6 | 0.00% |
| Koshi Slevin vs Shaheen | 3–2 | 60.00% |
| Koshi Slevin vs Eddy | 1–4 | 20.00% |
| Koshi Slevin vs Bryan | 4–0 | 100.00% |
| Koshi Slevin vs Asuka | 4–0 | 100.00% |
| Koshi Slevin vs Leroy | 2–2 | 50.00% |
| Koshi Slevin vs Victor | 3–1 | 75.00% |
| Koshi Slevin vs Azucena | 1–2 | 33.33% |
| Koshi Slevin vs Paul | 2–0 | 100.00% |
| Koshi Slevin vs Kazuya | 2–0 | 100.00% |
| Koshi Slevin vs Steve | 2–0 | 100.00% |
| Koshi Slevin vs Jack-8 | 0–2 | 0.00% |
| Koshi Slevin vs Nina | 2–0 | 100.00% |
| Koshi Slevin vs Zafina | 2–0 | 100.00% |
| Koshi Slevin vs Heihachi | 2–0 | 100.00% |
| Koshi Slevin vs Hwoarang | 0–1 | 0.00% |
| Koshi Slevin vs Alisa | 1–0 | 100.00% |
| Koshi Slevin vs Kuma | 1–0 | 100.00% |
| Koshi Slevin vs Raven | 1–0 | 100.00% |
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.