| Sirsomeone vs Kazuya | 127–145 | 46.69% |
| Sirsomeone vs Bryan | 112–136 | 45.16% |
| Sirsomeone vs Jin | 101–122 | 45.29% |
| Sirsomeone vs King | 105–113 | 48.17% |
| Sirsomeone vs Steve | 96–97 | 49.74% |
| Sirsomeone vs Yoshimitsu | 85–81 | 51.20% |
| Sirsomeone vs Dragunov | 85–76 | 52.80% |
| Sirsomeone vs Hwoarang | 73–65 | 52.90% |
| Sirsomeone vs Armor King | 51–75 | 40.48% |
| Sirsomeone vs Reina | 74–49 | 60.16% |
| Sirsomeone vs Heihachi | 52–68 | 43.33% |
| Sirsomeone vs Law | 57–58 | 49.57% |
| Sirsomeone vs Lili | 51–60 | 45.95% |
| Sirsomeone vs Clive | 44–52 | 45.83% |
| Sirsomeone vs Devil Jin | 39–56 | 41.05% |
| Sirsomeone vs Lee | 44–42 | 51.16% |
| Sirsomeone vs Fahkumram | 37–45 | 45.12% |
| Sirsomeone vs Xiaoyu | 44–35 | 55.70% |
| Sirsomeone vs Asuka | 45–31 | 59.21% |
| Sirsomeone vs Paul | 33–38 | 46.48% |
| Sirsomeone vs Lars | 31–40 | 43.66% |
| Sirsomeone vs Nina | 41–30 | 57.75% |
| Sirsomeone vs Azucena | 26–40 | 39.39% |
| Sirsomeone vs Feng | 33–27 | 55.00% |
| Sirsomeone vs Jun | 29–30 | 49.15% |
| Sirsomeone vs Jack-8 | 19–33 | 36.54% |
| Sirsomeone vs Alisa | 23–23 | 50.00% |
| Sirsomeone vs Victor | 20–26 | 43.48% |
| Sirsomeone vs Claudio | 19–25 | 43.18% |
| Sirsomeone vs Leroy | 20–20 | 50.00% |
| Sirsomeone vs Shaheen | 13–26 | 33.33% |
| Sirsomeone vs Eddy | 17–20 | 45.95% |
| Sirsomeone vs Raven | 14–20 | 41.18% |
| Sirsomeone vs Kuma | 18–14 | 56.25% |
| Sirsomeone vs Panda | 17–6 | 73.91% |
| Sirsomeone vs Lidia | 8–15 | 34.78% |
| Sirsomeone vs Leo | 12–10 | 54.55% |
| Sirsomeone vs Anna | 8–10 | 44.44% |
| Sirsomeone vs Zafina | 6–2 | 75.00% |
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.