| Ducka vs Reina | 60–44 | 57.69% |
| Ducka vs Kazuya | 50–52 | 49.02% |
| Ducka vs Jin | 45–51–1 | 46.88% |
| Ducka vs King | 38–51 | 42.70% |
| Ducka vs Bryan | 32–51 | 38.55% |
| Ducka vs Hwoarang | 36–39 | 48.00% |
| Ducka vs Clive | 45–28 | 61.64% |
| Ducka vs Lili | 39–31 | 55.71% |
| Ducka vs Heihachi | 35–34 | 50.72% |
| Ducka vs Law | 23–38 | 37.70% |
| Ducka vs Yoshimitsu | 27–32 | 45.76% |
| Ducka vs Steve | 23–30 | 43.40% |
| Ducka vs Paul | 19–28 | 40.43% |
| Ducka vs Dragunov | 25–22 | 53.19% |
| Ducka vs Xiaoyu | 28–17 | 62.22% |
| Ducka vs Azucena | 23–22 | 51.11% |
| Ducka vs Devil Jin | 26–15 | 63.41% |
| Ducka vs Alisa | 30–11 | 73.17% |
| Ducka vs Eddy | 10–27 | 27.03% |
| Ducka vs Lidia | 16–21 | 43.24% |
| Ducka vs Jun | 22–12 | 64.71% |
| Ducka vs Asuka | 21–10 | 67.74% |
| Ducka vs Zafina | 17–8 | 68.00% |
| Ducka vs Lars | 9–15 | 37.50% |
| Ducka vs Lee | 10–11 | 47.62% |
| Ducka vs Nina | 10–10 | 50.00% |
| Ducka vs Claudio | 9–10 | 47.37% |
| Ducka vs Victor | 11–8 | 57.89% |
| Ducka vs Fahkumram | 7–11 | 38.89% |
| Ducka vs Raven | 9–7 | 56.25% |
| Ducka vs Feng | 6–9 | 40.00% |
| Ducka vs Jack-8 | 7–7 | 50.00% |
| Ducka vs Kuma | 7–7 | 50.00% |
| Ducka vs Shaheen | 5–5 | 50.00% |
| Ducka vs Leroy | 3–6 | 33.33% |
| Ducka vs Leo | 5–2 | 71.43% |
| Ducka vs Anna | 1–2 | 33.33% |
| Ducka vs Panda | 2–0 | 100.00% |
| Ducka vs Armor King | 0–2 | 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.