| Leff vs Hwoarang | 87–53 | 62.14% |
| Leff vs Jin | 55–61 | 47.41% |
| Leff vs Paul | 64–45 | 58.72% |
| Leff vs Kazuya | 60–45 | 57.14% |
| Leff vs Dragunov | 55–48 | 53.40% |
| Leff vs Reina | 47–37 | 55.95% |
| Leff vs King | 44–34 | 56.41% |
| Leff vs Bryan | 42–35 | 54.55% |
| Leff vs Victor | 39–31 | 55.71% |
| Leff vs Asuka | 30–35 | 46.15% |
| Leff vs Yoshimitsu | 34–28 | 54.84% |
| Leff vs Steve | 25–32 | 43.86% |
| Leff vs Law | 26–30 | 46.43% |
| Leff vs Jun | 31–23 | 57.41% |
| Leff vs Lili | 25–21 | 54.35% |
| Leff vs Lars | 20–25 | 44.44% |
| Leff vs Lee | 22–23 | 48.89% |
| Leff vs Lidia | 18–26 | 40.91% |
| Leff vs Leroy | 18–25 | 41.86% |
| Leff vs Jack-8 | 16–23 | 41.03% |
| Leff vs Alisa | 18–20 | 47.37% |
| Leff vs Claudio | 23–14 | 62.16% |
| Leff vs Kuma | 15–18 | 45.45% |
| Leff vs Heihachi | 20–12 | 62.50% |
| Leff vs Clive | 16–16 | 50.00% |
| Leff vs Leo | 12–18 | 40.00% |
| Leff vs Eddy | 10–18 | 35.71% |
| Leff vs Xiaoyu | 15–12 | 55.56% |
| Leff vs Azucena | 14–13 | 51.85% |
| Leff vs Armor King | 12–15 | 44.44% |
| Leff vs Devil Jin | 12–13 | 48.00% |
| Leff vs Nina | 12–12 | 50.00% |
| Leff vs Fahkumram | 16–8 | 66.67% |
| Leff vs Feng | 9–8 | 52.94% |
| Leff vs Anna | 10–6 | 62.50% |
| Leff vs Miary Zo | 6–7 | 46.15% |
| Leff vs Zafina | 7–5 | 58.33% |
| Leff vs Raven | 6–6 | 50.00% |
| Leff vs Shaheen | 4–4 | 50.00% |
| Leff vs Panda | 2–2 | 50.00% |
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.