| Ouroboros vs Eddy | 8–16 | 33.33% |
| Ouroboros vs King | 12–11 | 52.17% |
| Ouroboros vs Jin | 6–13 | 31.58% |
| Ouroboros vs Reina | 6–12 | 33.33% |
| Ouroboros vs Hwoarang | 8–9 | 47.06% |
| Ouroboros vs Kazuya | 10–7 | 58.82% |
| Ouroboros vs Victor | 6–10 | 37.50% |
| Ouroboros vs Dragunov | 4–11 | 26.67% |
| Ouroboros vs Lili | 7–7 | 50.00% |
| Ouroboros vs Bryan | 3–7 | 30.00% |
| Ouroboros vs Law | 4–5 | 44.44% |
| Ouroboros vs Nina | 2–7 | 22.22% |
| Ouroboros vs Jun | 4–5 | 44.44% |
| Ouroboros vs Steve | 3–4 | 42.86% |
| Ouroboros vs Asuka | 2–4 | 33.33% |
| Ouroboros vs Shaheen | 1–5 | 16.67% |
| Ouroboros vs Leroy | 0–6 | 0.00% |
| Ouroboros vs Azucena | 1–5 | 16.67% |
| Ouroboros vs Lars | 2–3 | 40.00% |
| Ouroboros vs Alisa | 4–1 | 80.00% |
| Ouroboros vs Xiaoyu | 2–2 | 50.00% |
| Ouroboros vs Feng | 2–2 | 50.00% |
| Ouroboros vs Lee | 0–4 | 0.00% |
| Ouroboros vs Paul | 2–1 | 66.67% |
| Ouroboros vs Kuma | 1–2 | 33.33% |
| Ouroboros vs Yoshimitsu | 1–1 | 50.00% |
| Ouroboros vs Devil Jin | 0–2 | 0.00% |
| Ouroboros vs Claudio | 0–2 | 0.00% |
| Ouroboros vs Zafina | 1–1 | 50.00% |
| Ouroboros vs Raven | 1–1 | 50.00% |
| Ouroboros vs Fahkumram | 2–0 | 100.00% |
| Ouroboros vs Leo | 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.