| Isaac vs Eddy | 9–13 | 40.91% |
| Isaac vs King | 5–5 | 50.00% |
| Isaac vs Reina | 3–4 | 42.86% |
| Isaac vs Xiaoyu | 4–2 | 66.67% |
| Isaac vs Bryan | 5–1 | 83.33% |
| Isaac vs Kazuya | 2–4 | 33.33% |
| Isaac vs Lars | 2–4 | 33.33% |
| Isaac vs Azucena | 3–3 | 50.00% |
| Isaac vs Yoshimitsu | 2–3 | 40.00% |
| Isaac vs Hwoarang | 4–1 | 80.00% |
| Isaac vs Jin | 3–2 | 60.00% |
| Isaac vs Asuka | 5–0 | 100.00% |
| Isaac vs Lili | 4–1 | 80.00% |
| Isaac vs Shaheen | 4–0 | 100.00% |
| Isaac vs Lee | 2–2 | 50.00% |
| Isaac vs Steve | 3–0 | 100.00% |
| Isaac vs Jack-8 | 2–1 | 66.67% |
| Isaac vs Devil Jin | 1–2 | 33.33% |
| Isaac vs Alisa | 3–0 | 100.00% |
| Isaac vs Victor | 1–2 | 33.33% |
| Isaac vs Raven | 2–1 | 66.67% |
| Isaac vs Nina | 2–0 | 100.00% |
| Isaac vs Dragunov | 0–1 | 0.00% |
| Isaac vs Leo | 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.