| DuffMastaFlex vs King | 9–5 | 64.29% |
| DuffMastaFlex vs Feng | 9–5 | 64.29% |
| DuffMastaFlex vs Victor | 12–1 | 92.31% |
| DuffMastaFlex vs Hwoarang | 4–5 | 44.44% |
| DuffMastaFlex vs Yoshimitsu | 6–2 | 75.00% |
| DuffMastaFlex vs Bryan | 4–3 | 57.14% |
| DuffMastaFlex vs Paul | 3–3 | 50.00% |
| DuffMastaFlex vs Law | 5–1 | 83.33% |
| DuffMastaFlex vs Steve | 4–2 | 66.67% |
| DuffMastaFlex vs Miary Zo | 4–2 | 66.67% |
| DuffMastaFlex vs Jin | 5–0 | 100.00% |
| DuffMastaFlex vs Reina | 4–1 | 80.00% |
| DuffMastaFlex vs Raven | 2–3 | 40.00% |
| DuffMastaFlex vs Lidia | 3–2 | 60.00% |
| DuffMastaFlex vs Kazuya | 4–0 | 100.00% |
| DuffMastaFlex vs Devil Jin | 3–1 | 75.00% |
| DuffMastaFlex vs Lars | 4–0 | 100.00% |
| DuffMastaFlex vs Claudio | 2–2 | 50.00% |
| DuffMastaFlex vs Jun | 4–0 | 100.00% |
| DuffMastaFlex vs Nina | 1–2 | 33.33% |
| DuffMastaFlex vs Leroy | 2–1 | 66.67% |
| DuffMastaFlex vs Xiaoyu | 2–0 | 100.00% |
| DuffMastaFlex vs Asuka | 2–0 | 100.00% |
| DuffMastaFlex vs Dragunov | 1–1 | 50.00% |
| DuffMastaFlex vs Alisa | 0–2 | 0.00% |
| DuffMastaFlex vs Panda | 2–0 | 100.00% |
| DuffMastaFlex vs Zafina | 2–0 | 100.00% |
| DuffMastaFlex vs Eddy | 0–2 | 0.00% |
| DuffMastaFlex vs Armor King | 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.