| Ongsim vs Hwoarang | 15–12 | 55.56% |
| Ongsim vs Kazuya | 20–6 | 76.92% |
| Ongsim vs Lili | 12–11 | 52.17% |
| Ongsim vs Reina | 10–13 | 43.48% |
| Ongsim vs King | 11–10 | 52.38% |
| Ongsim vs Alisa | 13–8 | 61.90% |
| Ongsim vs Jin | 9–9 | 50.00% |
| Ongsim vs Heihachi | 13–5 | 72.22% |
| Ongsim vs Dragunov | 9–7 | 56.25% |
| Ongsim vs Nina | 5–8 | 38.46% |
| Ongsim vs Law | 0–12 | 0.00% |
| Ongsim vs Asuka | 10–2 | 83.33% |
| Ongsim vs Lee | 8–3 | 72.73% |
| Ongsim vs Devil Jin | 5–5 | 50.00% |
| Ongsim vs Jun | 5–5 | 50.00% |
| Ongsim vs Azucena | 8–2 | 80.00% |
| Ongsim vs Victor | 2–8 | 20.00% |
| Ongsim vs Steve | 7–2 | 77.78% |
| Ongsim vs Eddy | 4–5 | 44.44% |
| Ongsim vs Yoshimitsu | 4–4 | 50.00% |
| Ongsim vs Bryan | 4–4 | 50.00% |
| Ongsim vs Paul | 5–2 | 71.43% |
| Ongsim vs Claudio | 2–5 | 28.57% |
| Ongsim vs Feng | 4–2 | 66.67% |
| Ongsim vs Leo | 3–3 | 50.00% |
| Ongsim vs Xiaoyu | 3–2 | 60.00% |
| Ongsim vs Lars | 2–1 | 66.67% |
| Ongsim vs Leroy | 1–2 | 33.33% |
| Ongsim vs Jack-8 | 0–2 | 0.00% |
| Ongsim vs Kuma | 0–2 | 0.00% |
| Ongsim vs Lidia | 2–0 | 100.00% |
| Ongsim vs Shaheen | 0–1 | 0.00% |
| Ongsim vs Raven | 1–0 | 100.00% |
| Ongsim vs Clive | 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.