| Sirius Black vs Kazuya | 49–37 | 56.98% |
| Sirius Black vs King | 49–34 | 59.04% |
| Sirius Black vs Jin | 42–33 | 56.00% |
| Sirius Black vs Law | 37–29 | 56.06% |
| Sirius Black vs Bryan | 41–12 | 77.36% |
| Sirius Black vs Hwoarang | 21–25 | 45.65% |
| Sirius Black vs Reina | 30–14 | 68.18% |
| Sirius Black vs Lili | 20–23 | 46.51% |
| Sirius Black vs Steve | 28–14 | 66.67% |
| Sirius Black vs Devil Jin | 21–14 | 60.00% |
| Sirius Black vs Yoshimitsu | 21–12 | 63.64% |
| Sirius Black vs Lars | 28–5 | 84.85% |
| Sirius Black vs Eddy | 12–18 | 40.00% |
| Sirius Black vs Dragunov | 18–11 | 62.07% |
| Sirius Black vs Paul | 14–14 | 50.00% |
| Sirius Black vs Alisa | 18–9 | 66.67% |
| Sirius Black vs Xiaoyu | 15–9 | 62.50% |
| Sirius Black vs Azucena | 18–6 | 75.00% |
| Sirius Black vs Jun | 9–12 | 42.86% |
| Sirius Black vs Victor | 12–9 | 57.14% |
| Sirius Black vs Heihachi | 13–8 | 61.90% |
| Sirius Black vs Armor King | 10–11 | 47.62% |
| Sirius Black vs Nina | 13–6 | 68.42% |
| Sirius Black vs Asuka | 13–5 | 72.22% |
| Sirius Black vs Feng | 8–7 | 53.33% |
| Sirius Black vs Claudio | 10–5 | 66.67% |
| Sirius Black vs Fahkumram | 7–8 | 46.67% |
| Sirius Black vs Lee | 9–5 | 64.29% |
| Sirius Black vs Clive | 6–7 | 46.15% |
| Sirius Black vs Anna | 8–3 | 72.73% |
| Sirius Black vs Leo | 4–6 | 40.00% |
| Sirius Black vs Raven | 4–6 | 40.00% |
| Sirius Black vs Jack-8 | 3–6 | 33.33% |
| Sirius Black vs Leroy | 1–8 | 11.11% |
| Sirius Black vs Kuma | 2–5 | 28.57% |
| Sirius Black vs Shaheen | 5–1 | 83.33% |
| Sirius Black vs Zafina | 5–1 | 83.33% |
| Sirius Black vs Lidia | 2–2 | 50.00% |
| Sirius Black vs Panda | 2–1 | 66.67% |
| Sirius Black vs Miary Zo | 1–2 | 33.33% |
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.