| Undutiful vs Heihachi | 53–67 | 44.17% |
| Undutiful vs Kazuya | 68–45 | 60.18% |
| Undutiful vs Jin | 37–39 | 48.68% |
| Undutiful vs Bryan | 34–29 | 53.97% |
| Undutiful vs King | 38–23 | 62.30% |
| Undutiful vs Reina | 22–32 | 40.74% |
| Undutiful vs Paul | 30–23 | 56.60% |
| Undutiful vs Lili | 23–30 | 43.40% |
| Undutiful vs Steve | 25–24 | 51.02% |
| Undutiful vs Law | 21–21 | 50.00% |
| Undutiful vs Hwoarang | 22–17 | 56.41% |
| Undutiful vs Azucena | 13–24 | 35.14% |
| Undutiful vs Eddy | 20–17 | 54.05% |
| Undutiful vs Dragunov | 17–19 | 47.22% |
| Undutiful vs Victor | 16–18 | 47.06% |
| Undutiful vs Leo | 10–23 | 30.30% |
| Undutiful vs Yoshimitsu | 9–21 | 30.00% |
| Undutiful vs Devil Jin | 14–16 | 46.67% |
| Undutiful vs Lee | 11–16 | 40.74% |
| Undutiful vs Kuma | 14–12 | 53.85% |
| Undutiful vs Asuka | 7–17 | 29.17% |
| Undutiful vs Leroy | 10–13 | 43.48% |
| Undutiful vs Zafina | 8–13 | 38.10% |
| Undutiful vs Raven | 7–11 | 38.89% |
| Undutiful vs Xiaoyu | 7–10 | 41.18% |
| Undutiful vs Jack-8 | 7–10 | 41.18% |
| Undutiful vs Alisa | 9–7 | 56.25% |
| Undutiful vs Nina | 6–9 | 40.00% |
| Undutiful vs Lars | 6–7 | 46.15% |
| Undutiful vs Panda | 6–7 | 46.15% |
| Undutiful vs Jun | 3–10 | 23.08% |
| Undutiful vs Shaheen | 6–6 | 50.00% |
| Undutiful vs Lidia | 4–8 | 33.33% |
| Undutiful vs Claudio | 1–10 | 9.09% |
| Undutiful vs Armor King | 3–3 | 50.00% |
| Undutiful vs Clive | 1–1 | 50.00% |
| Undutiful vs Anna | 1–1 | 50.00% |
| Undutiful vs Fahkumram | 2–0 | 100.00% |
| Undutiful vs Feng | 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.