| Leondon vs Reina | 18–12 | 60.00% |
| Leondon vs Steve | 12–8 | 60.00% |
| Leondon vs Dragunov | 8–8 | 50.00% |
| Leondon vs Law | 7–6 | 53.85% |
| Leondon vs King | 6–5 | 54.55% |
| Leondon vs Yoshimitsu | 5–6 | 45.45% |
| Leondon vs Kazuya | 4–7 | 36.36% |
| Leondon vs Eddy | 6–5 | 54.55% |
| Leondon vs Anna | 4–6 | 40.00% |
| Leondon vs Hwoarang | 5–4 | 55.56% |
| Leondon vs Paul | 6–2 | 75.00% |
| Leondon vs Nina | 4–4 | 50.00% |
| Leondon vs Leroy | 4–4 | 50.00% |
| Leondon vs Clive | 5–3 | 62.50% |
| Leondon vs Feng | 5–2 | 71.43% |
| Leondon vs Lars | 6–1 | 85.71% |
| Leondon vs Jun | 3–4 | 42.86% |
| Leondon vs Lee | 3–3 | 50.00% |
| Leondon vs Raven | 3–3 | 50.00% |
| Leondon vs Jin | 1–4 | 20.00% |
| Leondon vs Jack-8 | 1–4 | 20.00% |
| Leondon vs Asuka | 4–1 | 80.00% |
| Leondon vs Kuma | 4–1 | 80.00% |
| Leondon vs Azucena | 2–3 | 40.00% |
| Leondon vs Victor | 2–3 | 40.00% |
| Leondon vs Heihachi | 2–3 | 40.00% |
| Leondon vs Lili | 3–1 | 75.00% |
| Leondon vs Zafina | 3–1 | 75.00% |
| Leondon vs Bryan | 2–1 | 66.67% |
| Leondon vs Devil Jin | 1–1 | 50.00% |
| Leondon vs Claudio | 1–1 | 50.00% |
| Leondon vs Xiaoyu | 0–1 | 0.00% |
| Leondon vs Alisa | 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.