| Yoo Ira vs Hwoarang | 10–11 | 47.62% |
| Yoo Ira vs Steve | 11–10 | 52.38% |
| Yoo Ira vs Jin | 6–12 | 33.33% |
| Yoo Ira vs King | 7–10 | 41.18% |
| Yoo Ira vs Kazuya | 12–5 | 70.59% |
| Yoo Ira vs Reina | 7–7 | 50.00% |
| Yoo Ira vs Eddy | 4–9 | 30.77% |
| Yoo Ira vs Lars | 5–7 | 41.67% |
| Yoo Ira vs Paul | 4–7 | 36.36% |
| Yoo Ira vs Dragunov | 5–5 | 50.00% |
| Yoo Ira vs Bryan | 2–7 | 22.22% |
| Yoo Ira vs Devil Jin | 2–6 | 25.00% |
| Yoo Ira vs Claudio | 3–5 | 37.50% |
| Yoo Ira vs Leroy | 5–3 | 62.50% |
| Yoo Ira vs Jun | 3–5 | 37.50% |
| Yoo Ira vs Azucena | 3–5 | 37.50% |
| Yoo Ira vs Asuka | 2–5 | 28.57% |
| Yoo Ira vs Lili | 4–3 | 57.14% |
| Yoo Ira vs Lee | 3–4 | 42.86% |
| Yoo Ira vs Law | 0–6 | 0.00% |
| Yoo Ira vs Yoshimitsu | 5–1 | 83.33% |
| Yoo Ira vs Victor | 5–1 | 83.33% |
| Yoo Ira vs Alisa | 1–4 | 20.00% |
| Yoo Ira vs Xiaoyu | 0–4 | 0.00% |
| Yoo Ira vs Feng | 2–2 | 50.00% |
| Yoo Ira vs Leo | 2–2 | 50.00% |
| Yoo Ira vs Nina | 3–0 | 100.00% |
| Yoo Ira vs Jack-8 | 2–0 | 100.00% |
| Yoo Ira vs Kuma | 0–2 | 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.