| JustShay vs Xiaoyu | 11–1 | 91.67% |
| JustShay vs Hwoarang | 11–0 | 100.00% |
| JustShay vs Lars | 9–2 | 81.82% |
| JustShay vs Bryan | 8–2 | 80.00% |
| JustShay vs Steve | 10–0 | 100.00% |
| JustShay vs Jin | 9–0 | 100.00% |
| JustShay vs Kazuya | 9–0 | 100.00% |
| JustShay vs Asuka | 9–0 | 100.00% |
| JustShay vs Zafina | 9–0 | 100.00% |
| JustShay vs Law | 8–0 | 100.00% |
| JustShay vs Reina | 7–0 | 100.00% |
| JustShay vs Clive | 7–0 | 100.00% |
| JustShay vs Nina | 6–0 | 100.00% |
| JustShay vs Eddy | 6–0 | 100.00% |
| JustShay vs King | 5–0 | 100.00% |
| JustShay vs Devil Jin | 5–0 | 100.00% |
| JustShay vs Dragunov | 5–0 | 100.00% |
| JustShay vs Panda | 5–0 | 100.00% |
| JustShay vs Leroy | 5–0 | 100.00% |
| JustShay vs Jun | 3–2 | 60.00% |
| JustShay vs Paul | 4–0 | 100.00% |
| JustShay vs Yoshimitsu | 4–0 | 100.00% |
| JustShay vs Kuma | 4–0 | 100.00% |
| JustShay vs Azucena | 4–0 | 100.00% |
| JustShay vs Heihachi | 4–0 | 100.00% |
| JustShay vs Claudio | 3–0 | 100.00% |
| JustShay vs Victor | 3–0 | 100.00% |
| JustShay vs Raven | 3–0 | 100.00% |
| JustShay vs Jack-8 | 2–0 | 100.00% |
| JustShay vs Shaheen | 2–0 | 100.00% |
| JustShay vs Feng | 1–0 | 100.00% |
| JustShay vs Lidia | 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.