| Happy Lei vs Reina | 18–22 | 45.00% |
| Happy Lei vs Hwoarang | 28–10 | 73.68% |
| Happy Lei vs Bryan | 17–18 | 48.57% |
| Happy Lei vs Law | 19–9 | 67.86% |
| Happy Lei vs Yoshimitsu | 10–14 | 41.67% |
| Happy Lei vs Victor | 11–12 | 47.83% |
| Happy Lei vs Eddy | 15–8 | 65.22% |
| Happy Lei vs King | 12–9–1 | 57.14% |
| Happy Lei vs Jin | 6–15 | 28.57% |
| Happy Lei vs Kazuya | 14–7 | 66.67% |
| Happy Lei vs Feng | 13–7 | 65.00% |
| Happy Lei vs Jack-8 | 9–8 | 52.94% |
| Happy Lei vs Lee | 10–7 | 58.82% |
| Happy Lei vs Leroy | 11–6 | 64.71% |
| Happy Lei vs Dragunov | 6–10 | 37.50% |
| Happy Lei vs Lars | 10–6 | 62.50% |
| Happy Lei vs Paul | 12–3 | 80.00% |
| Happy Lei vs Asuka | 8–6 | 57.14% |
| Happy Lei vs Xiaoyu | 9–4 | 69.23% |
| Happy Lei vs Devil Jin | 5–7 | 41.67% |
| Happy Lei vs Nina | 5–7 | 41.67% |
| Happy Lei vs Steve | 4–7 | 36.36% |
| Happy Lei vs Kuma | 5–6 | 45.45% |
| Happy Lei vs Jun | 5–6 | 45.45% |
| Happy Lei vs Shaheen | 4–6 | 40.00% |
| Happy Lei vs Lili | 5–4 | 55.56% |
| Happy Lei vs Leo | 5–3 | 62.50% |
| Happy Lei vs Claudio | 3–5 | 37.50% |
| Happy Lei vs Azucena | 3–4 | 42.86% |
| Happy Lei vs Alisa | 4–2 | 66.67% |
| Happy Lei vs Raven | 4–1 | 80.00% |
| Happy Lei vs Anna | 4–1 | 80.00% |
| Happy Lei vs Lidia | 2–2 | 50.00% |
| Happy Lei vs Heihachi | 0–4 | 0.00% |
| Happy Lei vs Clive | 4–0 | 100.00% |
| Happy Lei vs Panda | 3–0 | 100.00% |
| Happy Lei vs Fahkumram | 1–2 | 33.33% |
| Happy Lei vs Zafina | 2–0 | 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.