| NinjaByDay vs Law | 13–9 | 59.09% |
| NinjaByDay vs Jin | 13–2 | 86.67% |
| NinjaByDay vs King | 10–2 | 83.33% |
| NinjaByDay vs Hwoarang | 8–3 | 72.73% |
| NinjaByDay vs Bryan | 8–2 | 80.00% |
| NinjaByDay vs Kazuya | 7–2 | 77.78% |
| NinjaByDay vs Steve | 6–2 | 75.00% |
| NinjaByDay vs Yoshimitsu | 7–0 | 100.00% |
| NinjaByDay vs Jack-8 | 6–1 | 85.71% |
| NinjaByDay vs Clive | 7–0 | 100.00% |
| NinjaByDay vs Jun | 6–0 | 100.00% |
| NinjaByDay vs Heihachi | 2–4 | 33.33% |
| NinjaByDay vs Eddy | 3–2 | 60.00% |
| NinjaByDay vs Lidia | 4–1 | 80.00% |
| NinjaByDay vs Shaheen | 4–0 | 100.00% |
| NinjaByDay vs Reina | 1–3 | 25.00% |
| NinjaByDay vs Victor | 3–1 | 75.00% |
| NinjaByDay vs Devil Jin | 2–1 | 66.67% |
| NinjaByDay vs Lars | 1–2 | 33.33% |
| NinjaByDay vs Xiaoyu | 2–0 | 100.00% |
| NinjaByDay vs Asuka | 1–1 | 50.00% |
| NinjaByDay vs Leo | 2–0 | 100.00% |
| NinjaByDay vs Alisa | 2–0 | 100.00% |
| NinjaByDay vs Nina | 2–0 | 100.00% |
| NinjaByDay vs Lee | 2–0 | 100.00% |
| NinjaByDay vs Leroy | 2–0 | 100.00% |
| NinjaByDay vs Dragunov | 1–0 | 100.00% |
| NinjaByDay vs Azucena | 1–0 | 100.00% |
| NinjaByDay 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.