| SleepySean vs Kazuya | 65–44 | 59.63% |
| SleepySean vs Bryan | 36–59 | 37.89% |
| SleepySean vs Reina | 49–44 | 52.69% |
| SleepySean vs Jin | 38–46 | 45.24% |
| SleepySean vs Hwoarang | 36–39 | 48.00% |
| SleepySean vs King | 33–34 | 49.25% |
| SleepySean vs Heihachi | 29–29 | 50.00% |
| SleepySean vs Paul | 28–29 | 49.12% |
| SleepySean vs Yoshimitsu | 30–25 | 54.55% |
| SleepySean vs Dragunov | 26–23 | 53.06% |
| SleepySean vs Lee | 20–26 | 43.48% |
| SleepySean vs Steve | 14–27 | 34.15% |
| SleepySean vs Asuka | 16–21 | 43.24% |
| SleepySean vs Lili | 23–13 | 63.89% |
| SleepySean vs Devil Jin | 19–16 | 54.29% |
| SleepySean vs Law | 17–16 | 51.52% |
| SleepySean vs Azucena | 18–13 | 58.06% |
| SleepySean vs Jun | 13–17 | 43.33% |
| SleepySean vs Xiaoyu | 18–11 | 62.07% |
| SleepySean vs Alisa | 9–17 | 34.62% |
| SleepySean vs Fahkumram | 9–13 | 40.91% |
| SleepySean vs Armor King | 13–9 | 59.09% |
| SleepySean vs Eddy | 13–8 | 61.90% |
| SleepySean vs Nina | 12–8 | 60.00% |
| SleepySean vs Leroy | 7–12 | 36.84% |
| SleepySean vs Feng | 8–8 | 50.00% |
| SleepySean vs Lars | 7–9 | 43.75% |
| SleepySean vs Clive | 6–10 | 37.50% |
| SleepySean vs Victor | 4–11 | 26.67% |
| SleepySean vs Anna | 6–9 | 40.00% |
| SleepySean vs Leo | 1–12 | 7.69% |
| SleepySean vs Claudio | 8–1 | 88.89% |
| SleepySean vs Zafina | 4–5 | 44.44% |
| SleepySean vs Raven | 6–3 | 66.67% |
| SleepySean vs Lidia | 7–2 | 77.78% |
| SleepySean vs Jack-8 | 1–7 | 12.50% |
| SleepySean vs Shaheen | 3–2 | 60.00% |
| SleepySean vs Panda | 0–4 | 0.00% |
| SleepySean vs Miary Zo | 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.