| Sleepless vs Dragunov | 26–51 | 33.77% |
| Sleepless vs Victor | 32–28 | 53.33% |
| Sleepless vs Reina | 26–31 | 45.61% |
| Sleepless vs Jin | 28–28 | 50.00% |
| Sleepless vs Hwoarang | 35–19 | 64.81% |
| Sleepless vs Kazuya | 23–31 | 42.59% |
| Sleepless vs Bryan | 23–23 | 50.00% |
| Sleepless vs Feng | 26–20 | 56.52% |
| Sleepless vs Leroy | 25–20 | 55.56% |
| Sleepless vs Lili | 21–23 | 47.73% |
| Sleepless vs Paul | 23–18 | 56.10% |
| Sleepless vs Steve | 18–23 | 43.90% |
| Sleepless vs King | 28–12 | 70.00% |
| Sleepless vs Law | 19–16 | 54.29% |
| Sleepless vs Jack-8 | 15–19 | 44.12% |
| Sleepless vs Lars | 16–18 | 47.06% |
| Sleepless vs Nina | 21–12 | 63.64% |
| Sleepless vs Azucena | 20–11 | 64.52% |
| Sleepless vs Jun | 11–18 | 37.93% |
| Sleepless vs Yoshimitsu | 19–8 | 70.37% |
| Sleepless vs Asuka | 9–16 | 36.00% |
| Sleepless vs Alisa | 16–9 | 64.00% |
| Sleepless vs Xiaoyu | 9–14 | 39.13% |
| Sleepless vs Claudio | 12–10 | 54.55% |
| Sleepless vs Leo | 9–11 | 45.00% |
| Sleepless vs Zafina | 7–12 | 36.84% |
| Sleepless vs Lee | 9–7 | 56.25% |
| Sleepless vs Eddy | 9–7 | 56.25% |
| Sleepless vs Devil Jin | 10–4 | 71.43% |
| Sleepless vs Lidia | 6–8 | 42.86% |
| Sleepless vs Raven | 7–4 | 63.64% |
| Sleepless vs Shaheen | 6–3 | 66.67% |
| Sleepless vs Panda | 5–2 | 71.43% |
| Sleepless vs Kuma | 0–4 | 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.