| Hirai vs Bryan | 4–27 | 12.90% |
| Hirai vs Victor | 10–15 | 40.00% |
| Hirai vs Jin | 5–19 | 20.83% |
| Hirai vs Lili | 10–13 | 43.48% |
| Hirai vs Dragunov | 4–18 | 18.18% |
| Hirai vs Steve | 10–11 | 47.62% |
| Hirai vs Reina | 7–13 | 35.00% |
| Hirai vs Lars | 4–11 | 26.67% |
| Hirai vs Law | 2–11 | 15.38% |
| Hirai vs Kazuya | 2–11 | 15.38% |
| Hirai vs King | 5–7 | 41.67% |
| Hirai vs Paul | 3–7 | 30.00% |
| Hirai vs Asuka | 2–8 | 20.00% |
| Hirai vs Jun | 3–7 | 30.00% |
| Hirai vs Miary Zo | 0–10 | 0.00% |
| Hirai vs Heihachi | 3–6 | 33.33% |
| Hirai vs Fahkumram | 2–7 | 22.22% |
| Hirai vs Hwoarang | 1–7 | 12.50% |
| Hirai vs Xiaoyu | 3–4 | 42.86% |
| Hirai vs Eddy | 1–6 | 14.29% |
| Hirai vs Anna | 2–5 | 28.57% |
| Hirai vs Claudio | 2–4 | 33.33% |
| Hirai vs Lidia | 3–3 | 50.00% |
| Hirai vs Yoshimitsu | 4–1 | 80.00% |
| Hirai vs Jack-8 | 2–3 | 40.00% |
| Hirai vs Alisa | 2–3 | 40.00% |
| Hirai vs Devil Jin | 1–3 | 25.00% |
| Hirai vs Leo | 0–3 | 0.00% |
| Hirai vs Azucena | 1–2 | 33.33% |
| Hirai vs Clive | 1–2 | 33.33% |
| Hirai vs Shaheen | 2–0 | 100.00% |
| Hirai vs Nina | 0–2 | 0.00% |
| Hirai vs Lee | 0–2 | 0.00% |
| Hirai vs Armor King | 1–1 | 50.00% |
| Hirai vs Feng | 0–1 | 0.00% |
| Hirai vs Leroy | 0–1 | 0.00% |
| Hirai vs Raven | 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.