| HappyBirthday vs Jin | 8–5 | 61.54% |
| HappyBirthday vs Reina | 11–2 | 84.62% |
| HappyBirthday vs Law | 2–10 | 16.67% |
| HappyBirthday vs King | 4–8 | 33.33% |
| HappyBirthday vs Kazuya | 5–7 | 41.67% |
| HappyBirthday vs Leo | 4–7 | 36.36% |
| HappyBirthday vs Steve | 4–5 | 44.44% |
| HappyBirthday vs Dragunov | 3–6 | 33.33% |
| HappyBirthday vs Alisa | 4–5 | 44.44% |
| HappyBirthday vs Azucena | 5–4 | 55.56% |
| HappyBirthday vs Lili | 3–4 | 42.86% |
| HappyBirthday vs Lee | 5–2 | 71.43% |
| HappyBirthday vs Jack-8 | 2–4 | 33.33% |
| HappyBirthday vs Zafina | 2–4 | 33.33% |
| HappyBirthday vs Devil Jin | 1–4 | 20.00% |
| HappyBirthday vs Nina | 2–3 | 40.00% |
| HappyBirthday vs Lidia | 2–3 | 40.00% |
| HappyBirthday vs Hwoarang | 0–4 | 0.00% |
| HappyBirthday vs Victor | 2–2 | 50.00% |
| HappyBirthday vs Yoshimitsu | 0–3 | 0.00% |
| HappyBirthday vs Jun | 3–0 | 100.00% |
| HappyBirthday vs Bryan | 1–1 | 50.00% |
| HappyBirthday vs Feng | 1–1 | 50.00% |
| HappyBirthday vs Lars | 2–0 | 100.00% |
| HappyBirthday vs Kuma | 0–2 | 0.00% |
| HappyBirthday vs Xiaoyu | 1–0 | 100.00% |
| HappyBirthday vs Asuka | 1–0 | 100.00% |
| HappyBirthday vs Leroy | 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.