| John Madden vs Kazuya | 9–14 | 39.13% |
| John Madden vs Victor | 8–12 | 40.00% |
| John Madden vs Steve | 6–8 | 42.86% |
| John Madden vs Bryan | 7–5 | 58.33% |
| John Madden vs King | 5–6 | 45.45% |
| John Madden vs Reina | 8–3 | 72.73% |
| John Madden vs Eddy | 1–10 | 9.09% |
| John Madden vs Jun | 7–3 | 70.00% |
| John Madden vs Lars | 4–4 | 50.00% |
| John Madden vs Kuma | 4–3 | 57.14% |
| John Madden vs Paul | 2–4 | 33.33% |
| John Madden vs Yoshimitsu | 1–4 | 20.00% |
| John Madden vs Xiaoyu | 4–1 | 80.00% |
| John Madden vs Dragunov | 3–2 | 60.00% |
| John Madden vs Leo | 1–4 | 20.00% |
| John Madden vs Law | 4–0 | 100.00% |
| John Madden vs Jack-8 | 2–2 | 50.00% |
| John Madden vs Alisa | 4–0 | 100.00% |
| John Madden vs Lili | 1–2 | 33.33% |
| John Madden vs Shaheen | 2–1 | 66.67% |
| John Madden vs Nina | 2–1 | 66.67% |
| John Madden vs Lee | 1–2 | 33.33% |
| John Madden vs Panda | 2–1 | 66.67% |
| John Madden vs Leroy | 2–1 | 66.67% |
| John Madden vs Hwoarang | 2–0 | 100.00% |
| John Madden vs Asuka | 2–0 | 100.00% |
| John Madden vs Devil Jin | 0–2 | 0.00% |
| John Madden vs Claudio | 0–2 | 0.00% |
| John Madden vs Zafina | 0–2 | 0.00% |
| John Madden vs Azucena | 1–0 | 100.00% |
| John Madden vs Raven | 0–1 | 0.00% |
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.