| Diefer vs Kazuya | 62–35–1 | 63.92% |
| Diefer vs Reina | 43–48 | 47.25% |
| Diefer vs Jin | 41–45 | 47.67% |
| Diefer vs King | 51–32 | 61.45% |
| Diefer vs Steve | 45–35 | 56.25% |
| Diefer vs Bryan | 39–35 | 52.70% |
| Diefer vs Lili | 29–41 | 41.43% |
| Diefer vs Hwoarang | 33–31 | 51.56% |
| Diefer vs Jack-8 | 34–27 | 55.74% |
| Diefer vs Law | 36–23–1 | 61.02% |
| Diefer vs Eddy | 20–35 | 36.36% |
| Diefer vs Dragunov | 31–21 | 59.62% |
| Diefer vs Azucena | 25–27 | 48.08% |
| Diefer vs Asuka | 32–18 | 64.00% |
| Diefer vs Victor | 24–26 | 48.00% |
| Diefer vs Yoshimitsu | 24–25 | 48.98% |
| Diefer vs Jun | 15–30 | 33.33% |
| Diefer vs Xiaoyu | 20–24 | 45.45% |
| Diefer vs Lars | 17–24 | 41.46% |
| Diefer vs Paul | 20–20 | 50.00% |
| Diefer vs Devil Jin | 18–22 | 45.00% |
| Diefer vs Nina | 18–20 | 47.37% |
| Diefer vs Leroy | 22–14 | 61.11% |
| Diefer vs Feng | 15–18 | 45.45% |
| Diefer vs Lee | 12–19 | 38.71% |
| Diefer vs Leo | 15–15 | 50.00% |
| Diefer vs Alisa | 12–18 | 40.00% |
| Diefer vs Zafina | 16–12 | 57.14% |
| Diefer vs Raven | 20–6 | 76.92% |
| Diefer vs Claudio | 8–14 | 36.36% |
| Diefer vs Armor King | 14–6 | 70.00% |
| Diefer vs Kuma | 11–7 | 61.11% |
| Diefer vs Shaheen | 9–6 | 60.00% |
| Diefer vs Panda | 2–7 | 22.22% |
| Diefer vs Fahkumram | 4–0 | 100.00% |
| Diefer vs Lidia | 3–0 | 100.00% |
| Diefer vs Clive | 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.