| Derf vs Lidia | 25–14 | 64.10% |
| Derf vs Law | 11–9 | 55.00% |
| Derf vs Jun | 8–9 | 47.06% |
| Derf vs Clive | 11–5 | 68.75% |
| Derf vs Reina | 7–8 | 46.67% |
| Derf vs King | 7–7 | 50.00% |
| Derf vs Hwoarang | 7–7 | 50.00% |
| Derf vs Lili | 7–6 | 53.85% |
| Derf vs Lars | 4–9 | 30.77% |
| Derf vs Kazuya | 8–4 | 66.67% |
| Derf vs Asuka | 10–1 | 90.91% |
| Derf vs Steve | 5–4 | 55.56% |
| Derf vs Victor | 6–3 | 66.67% |
| Derf vs Azucena | 4–4 | 50.00% |
| Derf vs Paul | 1–6 | 14.29% |
| Derf vs Yoshimitsu | 4–3 | 57.14% |
| Derf vs Jin | 3–4 | 42.86% |
| Derf vs Alisa | 1–6 | 14.29% |
| Derf vs Lee | 4–2 | 66.67% |
| Derf vs Heihachi | 1–5 | 16.67% |
| Derf vs Feng | 1–4 | 20.00% |
| Derf vs Kuma | 2–3 | 40.00% |
| Derf vs Devil Jin | 2–2 | 50.00% |
| Derf vs Dragunov | 2–2 | 50.00% |
| Derf vs Leroy | 3–1 | 75.00% |
| Derf vs Leo | 0–3 | 0.00% |
| Derf vs Panda | 1–2 | 33.33% |
| Derf vs Raven | 1–2 | 33.33% |
| Derf vs Xiaoyu | 0–2 | 0.00% |
| Derf vs Bryan | 2–0 | 100.00% |
| Derf vs Jack-8 | 2–0 | 100.00% |
| Derf vs Nina | 2–0 | 100.00% |
| Derf vs Eddy | 0–2 | 0.00% |
| Derf vs Armor King | 2–0 | 100.00% |
| Derf vs Claudio | 1–0 | 100.00% |
| Derf vs Zafina | 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.