| Ostarion vs Bryan | 17–23 | 42.50% |
| Ostarion vs Kazuya | 20–12 | 62.50% |
| Ostarion vs Jin | 18–12 | 60.00% |
| Ostarion vs King | 11–14 | 44.00% |
| Ostarion vs Yoshimitsu | 11–8 | 57.89% |
| Ostarion vs Heihachi | 9–6 | 60.00% |
| Ostarion vs Fahkumram | 8–7 | 53.33% |
| Ostarion vs Reina | 8–6 | 57.14% |
| Ostarion vs Law | 9–4 | 69.23% |
| Ostarion vs Hwoarang | 5–7 | 41.67% |
| Ostarion vs Dragunov | 4–8 | 33.33% |
| Ostarion vs Lee | 4–8 | 33.33% |
| Ostarion vs Victor | 7–4 | 63.64% |
| Ostarion vs Anna | 7–4 | 63.64% |
| Ostarion vs Devil Jin | 5–5 | 50.00% |
| Ostarion vs Steve | 5–4 | 55.56% |
| Ostarion vs Lili | 6–3 | 66.67% |
| Ostarion vs Jun | 7–2 | 77.78% |
| Ostarion vs Lars | 5–3 | 62.50% |
| Ostarion vs Asuka | 7–0 | 100.00% |
| Ostarion vs Eddy | 5–2 | 71.43% |
| Ostarion vs Alisa | 3–3 | 50.00% |
| Ostarion vs Paul | 2–2 | 50.00% |
| Ostarion vs Xiaoyu | 2–2 | 50.00% |
| Ostarion vs Claudio | 2–2 | 50.00% |
| Ostarion vs Nina | 3–0 | 100.00% |
| Ostarion vs Kuma | 2–1 | 66.67% |
| Ostarion vs Panda | 2–1 | 66.67% |
| Ostarion vs Zafina | 1–2 | 33.33% |
| Ostarion vs Leroy | 1–2 | 33.33% |
| Ostarion vs Leo | 0–2 | 0.00% |
| Ostarion vs Lidia | 2–0 | 100.00% |
| Ostarion vs Feng | 1–0 | 100.00% |
| Ostarion vs Azucena | 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.