| Sir Leo San vs Hwoarang | 9–4 | 69.23% |
| Sir Leo San vs Jin | 7–2 | 77.78% |
| Sir Leo San vs Devil Jin | 8–1 | 88.89% |
| Sir Leo San vs Reina | 8–1 | 88.89% |
| Sir Leo San vs Bryan | 1–6 | 14.29% |
| Sir Leo San vs Lili | 4–3 | 57.14% |
| Sir Leo San vs Jun | 3–4 | 42.86% |
| Sir Leo San vs Victor | 4–3 | 57.14% |
| Sir Leo San vs Steve | 5–1 | 83.33% |
| Sir Leo San vs Eddy | 1–5 | 16.67% |
| Sir Leo San vs King | 0–4 | 0.00% |
| Sir Leo San vs Xiaoyu | 4–0 | 100.00% |
| Sir Leo San vs Lars | 2–2 | 50.00% |
| Sir Leo San vs Leroy | 3–1 | 75.00% |
| Sir Leo San vs Law | 2–1 | 66.67% |
| Sir Leo San vs Kazuya | 1–2 | 33.33% |
| Sir Leo San vs Jack-8 | 1–2 | 33.33% |
| Sir Leo San vs Paul | 2–0 | 100.00% |
| Sir Leo San vs Asuka | 1–1 | 50.00% |
| Sir Leo San vs Dragunov | 0–2 | 0.00% |
| Sir Leo San vs Shaheen | 2–0 | 100.00% |
| Sir Leo San vs Zafina | 0–2 | 0.00% |
| Sir Leo San vs Azucena | 1–1 | 50.00% |
| Sir Leo San vs Yoshimitsu | 1–0 | 100.00% |
| Sir Leo San vs Claudio | 0–1 | 0.00% |
| Sir Leo San vs Nina | 1–0 | 100.00% |
| Sir Leo San vs Lee | 1–0 | 100.00% |
| Sir Leo San vs Lidia | 0–1 | 0.00% |
| Sir Leo San vs Heihachi | 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.