| Sir Owain vs King | 9–16 | 36.00% |
| Sir Owain vs Steve | 12–11 | 52.17% |
| Sir Owain vs Kazuya | 12–8 | 60.00% |
| Sir Owain vs Reina | 8–10 | 44.44% |
| Sir Owain vs Lili | 12–4 | 75.00% |
| Sir Owain vs Lidia | 5–10 | 33.33% |
| Sir Owain vs Heihachi | 8–7 | 53.33% |
| Sir Owain vs Nina | 9–5 | 64.29% |
| Sir Owain vs Bryan | 7–5 | 58.33% |
| Sir Owain vs Yoshimitsu | 7–4 | 63.64% |
| Sir Owain vs Asuka | 5–4 | 55.56% |
| Sir Owain vs Dragunov | 7–2 | 77.78% |
| Sir Owain vs Lars | 4–5 | 44.44% |
| Sir Owain vs Paul | 4–4 | 50.00% |
| Sir Owain vs Jin | 6–2 | 75.00% |
| Sir Owain vs Alisa | 4–4 | 50.00% |
| Sir Owain vs Feng | 4–3 | 57.14% |
| Sir Owain vs Eddy | 1–5 | 16.67% |
| Sir Owain vs Clive | 2–3 | 40.00% |
| Sir Owain vs Xiaoyu | 4–0 | 100.00% |
| Sir Owain vs Jun | 3–1 | 75.00% |
| Sir Owain vs Claudio | 1–2 | 33.33% |
| Sir Owain vs Lee | 1–2 | 33.33% |
| Sir Owain vs Leroy | 1–2 | 33.33% |
| Sir Owain vs Azucena | 2–1 | 66.67% |
| Sir Owain vs Victor | 2–1 | 66.67% |
| Sir Owain vs Raven | 1–2 | 33.33% |
| Sir Owain vs Law | 2–0 | 100.00% |
| Sir Owain vs Hwoarang | 1–1 | 50.00% |
| Sir Owain vs Jack-8 | 2–0 | 100.00% |
| Sir Owain vs Leo | 2–0 | 100.00% |
| Sir Owain vs Devil Jin | 1–0 | 100.00% |
| Sir Owain vs Shaheen | 1–0 | 100.00% |
| Sir Owain vs Kuma | 1–0 | 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.