| ONCE UPON vs King | 18–10 | 64.29% |
| ONCE UPON vs Reina | 14–13 | 51.85% |
| ONCE UPON vs Kazuya | 14–11 | 56.00% |
| ONCE UPON vs Steve | 5–12 | 29.41% |
| ONCE UPON vs Hwoarang | 13–3 | 81.25% |
| ONCE UPON vs Jin | 11–3 | 78.57% |
| ONCE UPON vs Bryan | 6–7 | 46.15% |
| ONCE UPON vs Heihachi | 9–4 | 69.23% |
| ONCE UPON vs Yoshimitsu | 8–3 | 72.73% |
| ONCE UPON vs Xiaoyu | 5–6 | 45.45% |
| ONCE UPON vs Nina | 4–7 | 36.36% |
| ONCE UPON vs Azucena | 9–2 | 81.82% |
| ONCE UPON vs Victor | 9–2 | 81.82% |
| ONCE UPON vs Clive | 6–5 | 54.55% |
| ONCE UPON vs Lars | 4–6 | 40.00% |
| ONCE UPON vs Lee | 8–2 | 80.00% |
| ONCE UPON vs Law | 6–3 | 66.67% |
| ONCE UPON vs Eddy | 5–4 | 55.56% |
| ONCE UPON vs Dragunov | 5–3 | 62.50% |
| ONCE UPON vs Asuka | 3–4 | 42.86% |
| ONCE UPON vs Devil Jin | 3–4 | 42.86% |
| ONCE UPON vs Leo | 2–5 | 28.57% |
| ONCE UPON vs Alisa | 4–3 | 57.14% |
| ONCE UPON vs Shaheen | 2–5 | 28.57% |
| ONCE UPON vs Jun | 2–5 | 28.57% |
| ONCE UPON vs Lidia | 4–3 | 57.14% |
| ONCE UPON vs Kuma | 2–4 | 33.33% |
| ONCE UPON vs Paul | 4–1 | 80.00% |
| ONCE UPON vs Zafina | 4–1 | 80.00% |
| ONCE UPON vs Jack-8 | 2–2 | 50.00% |
| ONCE UPON vs Leroy | 2–2 | 50.00% |
| ONCE UPON vs Raven | 1–2 | 33.33% |
| ONCE UPON vs Lili | 0–2 | 0.00% |
| ONCE UPON vs Panda | 0–2 | 0.00% |
| ONCE UPON vs Feng | 0–1 | 0.00% |
| ONCE UPON vs Claudio | 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.