| Joni vs Reina | 8–5 | 61.54% |
| Joni vs Steve | 4–5 | 44.44% |
| Joni vs Jin | 4–4 | 50.00% |
| Joni vs Devil Jin | 4–4 | 50.00% |
| Joni vs Nina | 3–5 | 37.50% |
| Joni vs Eddy | 2–6 | 25.00% |
| Joni vs Dragunov | 4–3 | 57.14% |
| Joni vs Jun | 1–4 | 20.00% |
| Joni vs Azucena | 3–2 | 60.00% |
| Joni vs King | 2–2 | 50.00% |
| Joni vs Bryan | 0–4 | 0.00% |
| Joni vs Kazuya | 0–4 | 0.00% |
| Joni vs Asuka | 0–4 | 0.00% |
| Joni vs Lars | 2–2 | 50.00% |
| Joni vs Leroy | 2–2 | 50.00% |
| Joni vs Paul | 1–2 | 33.33% |
| Joni vs Hwoarang | 1–2 | 33.33% |
| Joni vs Claudio | 0–3 | 0.00% |
| Joni vs Shaheen | 2–1 | 66.67% |
| Joni vs Heihachi | 2–1 | 66.67% |
| Joni vs Law | 0–2 | 0.00% |
| Joni vs Xiaoyu | 0–2 | 0.00% |
| Joni vs Lili | 2–0 | 100.00% |
| Joni vs Lee | 2–0 | 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.